NPPES file of Aug 9, 2026

Adam Paul Carter Warren, MD, MPH

Orthopaedic Trauma Physician · Oakland, CA

Adam Paul Carter Warren, MD, MPH is an orthopaedic trauma physician with a practice address in Oakland, California, and NPI 1205164761, issued on Nov 20, 2009. Check the license (California A103633, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1205164761
Name
Adam Paul Carter Warren
Credential
MD, MPH
Primary taxonomy
Orthopaedic Trauma Physician 207XX0801X
License numbers
A103633 CA
MD446107 PA
Self-reported in NPPES; status is on the state search
Practice location
5700 Telegraph Ave Ste 100, Oakland, CA 94609
Phone
(877) 400-0128
Enumerated
Nov 20, 2009
Record last updated
Nov 6, 2025
Fax
(510) 400-5118
Medicaid IDs
055447200 MD
102733306 PA
Medicare enrollment
Enrolled (PECOS I20131025001562); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 2004
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5700 Telegraph Ave Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Darren Guillaume, PA-C, CSSurgical Physician Assistant1114088671

Verify Adam Paul Carter Warren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A103633
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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77% fewer Medicare Part D claims than the average orthopaedic trauma physician in 2024

35 Medicare Part D claims for 24 beneficiaries, against an average of 151 among the 627 providers of this specialty who prescribed in Part D. 33 claims were for opioids.

  1. Adam Warren35
  2. Specialty average151

Most prescribed

  1. Hydrocodone-Acetaminophen19 claims
  2. Oxycodone Hcl12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $11,150.13

15 payments; by number, the most common kind was food and beverage; the largest payer was Medical Device Business Services, Inc. The 722 providers of this specialty with any payment received $15,814.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Adam Warren$11,150
  2. Specialty average$15,814

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Orion Orthopaedic Trauma IncModesto, CA
  2. Sutter Bay Medical FoundationBerkeley, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Adam Paul Carter Warren among 114 orthopaedic trauma physician records in California

Adam Paul Carter Warren, MD, MPH is one of 114 orthopaedic trauma physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 47% of them.

  • NPI issued2009 · 47% of these records are older, 47% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 83% of these records are
  • Graduated2004 · median 2009 among the 95 with a school on file
  • Record last updated2025 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0801X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Trauma Physician providers in California

There are 114 orthopaedic trauma physician records in California.

The 8 orthopaedic trauma physician records with the nearest ZIP codes

  1. Christopher Grimsrud, MDOakland, CA 946111447241609
  2. Abhinav NalluriOakland, CA 946111801254537
  3. Christopher Coufal, M.D.Walnut Creek, CA 945981467402859
  4. Eric Fulkerson, MDWalnut Creek, CA 945981568581429
  5. Virginia Lieu, MDCastro Valley, CA 945461063945962
  6. Steven Zourabian, D.O.Castro Valley, CA 945461578918926
  7. Julius Bishop, MDStanford, CA 943051548381999
  8. Michael Gardner, MDStanford, CA 943051710101555

Common questions

What is Adam Paul Carter Warren, MD, MPH's NPI number?

Adam Paul Carter Warren, MD, MPH's National Provider Identifier (NPI) is 1205164761, issued on Nov 20, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Adam Paul Carter Warren, MD, MPH located?

The NPPES record lists a practice address at 5700 Telegraph Ave Ste 100, Oakland, CA, 94609. Phone: (877) 400-0128. Providers update this record themselves, so call before visiting.

How can I verify Adam Paul Carter Warren, MD, MPH's license?

NPPES lists California license number A103633, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Adam Paul Carter Warren, MD, MPH prescribe under Medicare Part D?

In 2024, Adam Paul Carter Warren, MD, MPH had 35 Medicare Part D claims for 24 beneficiaries; the average among orthopaedic trauma physician prescribers was 151. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.