US Health Maintenance Organization Practices
U.S. · 4,302 locations
There are 4,302 Health Maintenance Organization Practices in the US as of September 2026. They are in all 50 states, DC and Puerto Rico.
4,302 healthcare organizations — practices, clinics, agencies and facilities, each at its business address. 100% carry a street address, 100% a telephone number, 46% a state license number, 100% a specialty from the NUCC taxonomy.
More about this list
Built from the CMS National Plan and Provider Enumeration System (NPPES) monthly file, the NPPES deactivation report, the NUCC provider taxonomy and the CMS Care Compare Doctors and Clinicians national file. Every deactivated NPI is removed — 351,911 of them — rather than shipped as an empty row, and the address is the practice location, never the mailing address. Coverage is 52 states and territories.
Need just some of them? Ask in your own words.
●Where the rows are
≡Sample Data Preview
| name | address | city | state | zip | phone | npi | entity type | specialty | county | cbsa title | organization name | license number | license state | facility affiliations | oig excluded | npis at address | other organization name | additional names | primary taxonomy code | provider grouping | classification | all taxonomy codes | taxonomy count | zip plus4 | fax | direct address | other endpoint | endpoint count | mailing address | mailing city | mailing state | mailing zip | mailing country | organization subpart | parent organization | authorized official | authorized official first | authorized official middle | authorized official last | authorized official title | authorized official credential | authorized official phone | other identifiers | other identifier types | other identifier issuers | taxonomy groups | secondary practice locations | enumeration date | last update date | certification date | ein | secondary practice locations n | secondary address | secondary city | secondary state | secondary zip | secondary phone | secondary phone ext | secondary fax | additional names 1 | additional name count | endpoint affiliation | county fips | state fips | cbsa code | cbsa type | zip land sqmi | geo precision | address quality | latitude | longitude | country |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LAKES MEDICAL CLINIC | 5050 DUNBAR STREET, SUITE D | Wasilla | AK | 99654 | (907) 357-0820 | 1225237563 | Organization | Health Maintenance Organization | Matanuska-Susitna Borough | Anchorage, AK | LAKES MEDICAL CLINIC | AK | 0 | N | 1 | 302R00000X | Managed Care Organizations | Health Maintenance Organization | 302R00000X | 1 | 99654 | 9073570821 | 0 | PO BOX 876009 | WASILLA | AK | 99687 | US | N | CHARLES D LAYMAN | CHARLES | D | LAYMAN | M.D. | M.D. | (907) 357-0820 | 1154418945|1083701858 | 01|01 | NPI # DR. CHARLES D. LAYM|NPI # GERALD EDWARD MANNI | 0 | 07/17/2007 | 07/21/2022 | 0 | 0 | 02170 | 02 | 11260 | Metropolitan Statistical Area | 113.667 | source | complete | 61.605123 | -149.422671 | US | ||||||||||||||||||
| JONESBORO REHAB & MASSAGE | 284 N MAIN ST | Jonesboro | GA | 30236 | (678) 604-7799 | 1881010171 | Organization | Health Maintenance Organization | Clayton County | Atlanta-Sandy Springs-Roswell, GA | JONESBORO REHAB & MASSAGE | 0 | N | 1 | 302R00000X | Managed Care Organizations | Health Maintenance Organization | 302R00000X | 1 | 30236-3267 | 6786047796 | 0 | 284 N MAIN ST | JONESBORO | GA | 30236 | US | N | EURANIA PRINCETTE NORTON | EURANIA | PRINCETTE | NORTON | OWNER | (678) 604-7799 | 0 | 03/11/2014 | 03/11/2014 | 0 | 0 | 13063 | 13 | 12060 | Metropolitan Statistical Area | 32.392 | source | complete | 33.519927 | -84.325187 | US | |||||||||||||||||||||||
| VISION OPTICAL | 8635 CHERRY LN | Laurel | MD | 20707 | (301) 483-3103 | 1447496260 | Organization | Health Maintenance Organization | Prince George's County | Washington-Arlington-Alexandria, DC-VA-MD-WV | VISION OPTICAL | 152W00000X | MD | 0 | N | 2 | 302R00000X | Managed Care Organizations | Health Maintenance Organization | 302R00000X | 1 | 20707-6200 | 0 | 8635 CHERRY LN | LAUREL | MD | 20707 | US | N | SHARON MAXINE TERRY | SHARON | MAXINE | TERRY | OWNER | (301) 483-3103 | 0 | 12/29/2008 | 12/29/2008 | 0 | 0 | 24033 | 24 | 47900 | Metropolitan Statistical Area | 12.644 | source | complete | 39.095593 | -76.883877 | US | ||||||||||||||||||||||
| WELLNESS WORKS LLC | 7 MAIN ST STE 2 | Peterborough | NH | 03458 | (603) 547-5051 | 1760985931 | Organization | Health Maintenance Organization | Hillsborough County | Manchester-Nashua, NH | WELLNESS WORKS LLC | 7155M | NH | 0 | N | 1 | 302R00000X | Managed Care Organizations | Health Maintenance Organization | 302R00000X | 1 | 03458-2460 | 0 | 7 MAIN ST STE 2 | PETERBOROUGH | NH | 03458 | US | N | PAUL E YOUNGQUIST | PAUL | E | YOUNGQUIST | OWNER/MANAGER | LMT | (603) 547-5051 | 0 | 03/14/2018 | 03/14/2018 | 0 | 0 | 33011 | 33 | 31700 | Metropolitan Statistical Area | 53.71 | source | complete | 42.868369 | -71.940102 | US | |||||||||||||||||||||
| SAVINI ENTERPRISES, L.L.C. | 4 CARRIAGE LN, SUITE 400A | Charleston | SC | 29407 | (843) 534-6212 | 1487855524 | Organization | Health Maintenance Organization | Charleston County | Charleston-North Charleston, SC | SAVINI ENTERPRISES, L.L.C. | 0 | N | 1 | 302R00000X | Managed Care Organizations | Health Maintenance Organization | 302R00000X | 1 | 29407-6065 | 0 | 1150 HUNGRYNECK BLVD, BOX C 363 | MOUNT PLEASANT | SC | 29464 | US | N | MICHAEL D SAVINI | MICHAEL | D | SAVINI | CHIEF EXECUTIVE OFFICER | (843) 534-6212 | 0 | 05/29/2007 | 08/22/2020 | 0 | 0 | 45019 | 45 | 16700 | Metropolitan Statistical Area | 15.368 | source | complete | 32.79893 | -79.997803 | US |
{}What's in each row
| Field | What it is | Rows filled |
|---|---|---|
| npi | National Provider Identifier — the federal key for every US healthcare provider | 100% |
| name | Organization legal business name, or the provider's full name | 100% |
| entity_ | Organization or Individual — whether the row is a business or a licensed person | 100% |
| specialty | Primary specialty, decoded from the NUCC provider taxonomy | 100% |
| address | Practice location street address (never the mailing address) | 100% |
| city | City | 100% |
| state | Two-letter state code | 100% |
| zip | 5-digit ZIP | 100% |
| phone | Practice location telephone, digits only | 100% |
| county | County the location is in | 100% |
| cbsa_ | Cbsa title | 97% |
| latitude | Latitude | 100% |
| longitude | Longitude | 100% |
| organization_ | Legal business name where the row is an organization | 100% |
| license_ | State license number for the primary taxonomy | 46% |
| license_ | State that issued that license | 53% |
| facility_ | Facility affiliations | 100% |
| oig_ | Oig excluded | 100% |
| npis_ | How many NPIs share this practice address — the entity-vs-location fan-in | 100% |
| other_ | Other organization name | 18% |
| additional_ | Additional names | 21% |
| primary_ | Primary taxonomy code | 100% |
| provider_ | NUCC top-level grouping, e.g. Allopathic & Osteopathic Physicians | 100% |
| classification | NUCC classification — the level products are cut on | 100% |
| all_ | Every taxonomy code the provider declared, pipe-separated | 100% |
| taxonomy_ | How many distinct taxonomies that is | 100% |
| zip_ | ZIP+4 where the provider filed one | 100% |
| country | Country | 100% |
| fax | Practice location fax | 45% |
| other_ | Other endpoint | 3% |
| endpoint_ | How many electronic endpoints the provider registered | 100% |
| mailing_ | Business mailing address, kept separate because it differs for a large minority | 100% |
| mailing_ | Mailing city | 100% |
| mailing_ | Mailing state | 100% |
| mailing_ | Mailing ZIP | 100% |
| mailing_ | Mailing country | 100% |
| organization_ | Y where this NPI is a subpart of a larger organization | 100% |
| parent_ | Parent organization legal business name where the NPI is a subpart | 9% |
| authorized_ | Named authorized official for an organization NPI | 100% |
| authorized_ | Authorized official first | 100% |
| authorized_ | Authorized official middle | 44% |
| authorized_ | Authorized official last | 100% |
| authorized_ | That official's title | 100% |
| authorized_ | Authorized official credential | 41% |
| authorized_ | That official's telephone | 100% |
| other_ | Other identifiers | 17% |
| other_ | Other identifier types | 17% |
| other_ | Other identifier issuers | 6% |
| taxonomy_ | Taxonomy groups | 2% |
| secondary_ | Count of additional practice locations filed since 2020 | 100% |
| enumeration_ | Date the NPI was issued | 100% |
| last_ | Date the provider last updated their NPPES record | 100% |
| certification_ | Certification date | 21% |
| ein | Employer Identification Number where the provider published one | 100% |
| secondary_ | Secondary practice locations n | 100% |
| secondary_ | Secondary address | 1% |
| secondary_ | Secondary city | 1% |
| secondary_ | Secondary state | 1% |
| secondary_ | Secondary zip | 1% |
| secondary_ | Secondary phone | 1% |
| additional_ | Additional names 1 | 21% |
| additional_ | Additional name count | 100% |
| county_ | Five-digit federal code of that county | 100% |
| state_ | State fips | 99% |
| cbsa_ | Cbsa code | 97% |
| cbsa_ | Cbsa type | 97% |
| zip_ | Zip land sqmi | 99% |
| geo_ | How exact the map point is: the source's own point, the street address, or the ZIP code's centre | 100% |
| address_ | Whether the street address is complete, missing a house number, or a PO box | 100% |
Rows filled is measured on every row of the delivered file.
✓Where this data comes from
This dataset is built from the CMS National Plan and Provider Enumeration System (NPPES) monthly file — the federal registry every billing provider must maintain — with the NPPES deactivation report applied so retired NPIs are excluded, specialties resolved against the NUCC provider taxonomy, and Medicare participation joined from the CMS Care Compare Doctors and Clinicians national file. Nothing here comes from a provider's own website; every record is the provider's own registered entry.
September 14, 2026
File built
73 fields
Columns in the file
Fill measured
On every row of the delivered file
Deactivated NPIs are removed using the CMS deactivation report, specialties are resolved against the NUCC taxonomy rather than kept as raw codes, and addresses are validated to US bounds and ZIP format. Records are otherwise published as registered — the federal file is the record of truth, and correcting it would make the dataset disagree with the source buyers reconcile against.
How we build and date every file: methodology.
Using ChatGPT, Claude or an API?
No setup needed. Ask ChatGPT or Claude your question about the US Health Maintenance Organization Practices and give it this page: it can open https://locationlists.com/find?dataset=us-health-maintenance-organization-practices with the filters you need and show you the count and price.
Using ChatGPT or Claude? Tell it to answer from locationlists.com/find — no account, no connector.
How assistants ask
No connector needed. Any AI assistant can answer from this site with a web link, no connector, no account: open https://locationlists.com/find with the question as query parameters.
If a question needs filtering, distance, drive time, combining lists or a price, open a /find link: either put the question itself in q=, or build the structured link. The answer does not need an API, a connector or an account.
Simplest, the question itself: https://locationlists.com/find?q=<the question in plain words>
Or set the parts yourself: https://locationlists.com/find?dataset=<slug>&state=<ST>&city=<city>&county=<county>&zip=<zip>&near=<place or zip>&radius=<miles>&drive=<minutes>&where=<column>:<op>:<value>&total=<rows>
Leave out what the question does not need. Use radius for straight-line miles or drive for minutes of driving (5 to 60), not both; near can name several places separated by | to reach from any of them. To ask about several lists at once, use datasets with two or more names, or category with a kind of business. To compare two lists, add relate=nearest and the other list with b. in front of its parameters. To count by area, use areas=county (or zip, state, metro). To keep only places whose county, ZIP code, metro area or state meets a Census figure, add area_where (for example county:population>1000000); with areas, per=100000 gives counts per 100,000 residents.
Links an assistant can open, each showing how many rows match, a few preview rows and the price for just that part:
- Only California, the state with the most: https://locationlists.com/find?dataset=us-health-maintenance-organization-practices&state=CA
- Within 25 miles of Los Angeles, CA, the busiest area: https://locationlists.com/find?dataset=us-health-maintenance-organization-practices&near=Los+Angeles+CA&radius=25
- Within a 30-minute drive of Los Angeles, CA: https://locationlists.com/find?dataset=us-health-maintenance-organization-practices&near=Los+Angeles+CA&drive=30
- Only rows where zip_land_sqmi is over 32.39: https://locationlists.com/find?dataset=us-health-maintenance-organization-practices&where=zip_land_sqmi%3Agt%3A32.39
- The whole list: add a city, state, ZIP code or distance:
https://locationlists.com/find?dataset=us-health-maintenance-organization-practices - In plain words: "US Health Maintenance Organization Practices in California": https://locationlists.com/find?q=US+Health+Maintenance+Organization+Practices+in+California
- In plain words: "US Health Maintenance Organization Practices within 25 miles of Los Angeles, CA": https://locationlists.com/find?q=US+Health+Maintenance+Organization+Practices+within+25+miles+of+Los+Angeles%2C+CA
Optional: connect for repeat use or wallet payments:
Read https://locationlists.com/skill.md and follow the instructions to connect LocationLists. Then show me the US Health Maintenance Organization Practices list.Your assistant will walk you through setup and show you the price before you pay.
For developers
At 4,302 records this dataset is not sold by the row — buy the file. Without a connector, open https://locationlists.com/find?dataset=us-health-maintenance-organization-practices. An agent connected to https://locationlists.com/mcp can still search it, read a free sample file of up to 10 rows and buy the whole file itself. How agent purchasing works
?Frequently Asked Questions
How many Health Maintenance Organization Practices are there in the US?
There are 4,302 Health Maintenance Organization Practices in the US as of September 2026. They are in all 50 states, DC and Puerto Rico.
Where does this data come from?
The CMS National Plan and Provider Enumeration System — the federal NPI registry — plus the NUCC provider taxonomy and the CMS Care Compare clinician file. All three are published by the government and free to download; what you are buying is the parsing, the taxonomy decode, the deactivation cleanup and the cut. Every vendor selling an NPI-based list is working from the same files.
Are these businesses or individual people?
Organizations only — practices, clinics, agencies and facilities at their business address. Individual providers are sold separately so the two are never mixed.
One address sometimes has several NPIs. Does that inflate the count?
It can, and the file tells you: npis_at_address counts how many NPIs share each practice address. NPPES enumerates billing entities rather than premises, so a practice may carry one NPI per owning PLLC. Filter on that column to get sites.
Is this the same data Definitive Healthcare or IQVIA sell?
The registry underneath is the same public CMS file. What those vendors add on top is their own layer — hospital affiliations they research, executive contacts, claims-derived volumes, purchasing intent. If you need that, buy them. If you need the registry itself as a file you own, this is it, at a fraction of a subscription.
Does this include email addresses?
No, and no honest NPI-based product does — NPPES has no email field. What it does have is the Direct secure-messaging address that some providers register for clinical data exchange, and those ship in their own column, labelled, because they are not marketing addresses. Any vendor selling you a 'physician email list' built on NPI data appended those emails from somewhere else.
How current is it?
File built on September 14, 2026. It is not on an automatic refresh schedule, so check the build date above before you buy.
What format is the download?
A single UTF-8 CSV with a header row, one row per NPI, ready for Excel, a CRM import or a database load. Commercial licence, one-off purchase, no subscription.