NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1801476262 DO
Verify on CMS → Adam Warren, DO
Family Medicine Physician in Tahlequah, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Adam Warren, DO is a Family Medicine Physician in Tahlequah, Oklahoma, listed in the federal CMS National Provider Identifier registry.
- #12
- Family Medicine Physician rank among Oklahoma specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Adam Warren, DO
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1801476262), first enumerated 04/10/2021.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1801476262 · Family Medicine Physician
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1801476262
- ENUM-RECENT 2021
- TAX-MEGA 148K Family Medicine
- RX-NONE No Part D
- BOOK-LIGHT 2,177 in Oklahoma
- PHOTO-ENUM Millie Nishikawa · 2021
◑
Board-eligible specialty (heuristic, not verified)
Adam Warren, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Adam Warren, DO?
Quality data not reportedPrimary specialty
Family Medicine Physician
Specialty distribution in Oklahoma
How Family Medicine Physician compares to other specialties among Oklahoma providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1801476262 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 04/10/2021 |
Family Medicine Physician Overview
How Adam Warren, DO fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Warren, both outside Oklahoma so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Warren.
One of 2,177 Family Medicine Physician providers enrolled in Oklahoma, 5 are shown here.
Dr. Michael Aaron
M.D.
Weatherford, OK
Dr. Nicole Abel
DO
Tulsa, OK
Dr. Robert Abell
MD
Oklahoma City, OK
Dr. Bob Abernathy
DO
Cordell, OK
Dr. Rochelle Ablah
MD
Oklahoma City, OK
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Adam Warren, DO's specialty? ▼
Adam Warren, DO specializes in Family Medicine Physician and practices in Tahlequah, Oklahoma. Credentials: DO.
Where is Adam Warren, DO located? ▼
Adam Warren, DO is located at 19600 E ROSS ST, Tahlequah, OK, 74464. Phone: (539) 234-1000.
What is Adam Warren, DO's NPI number? ▼
Adam Warren, DO's National Provider Identifier (NPI) is 1801476262, issued on 04/10/2021.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
Does Adam Warren, DO accept Medicare? ▼
Adam Warren, DO appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Adam Warren, DO's credentials? ▼
Adam Warren, DO's NPI is 1801476262 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.