Thomas Ryan Wallin, M.D.
Emergency Medicine Physician · Emeryville, CA
Thomas Ryan Wallin, M.D. is an emergency medicine physician with a practice address in Emeryville, California, and NPI 1881872034, issued on Feb 8, 2008. Check the license (California A94866, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Ryan Wallin
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A94866 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Powell Street, Emeryville, CA 94608
- Phone
- (888) 267-3880
- Enumerated
- Feb 8, 2008
- Record last updated
- Mar 6, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2100 Powell Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Alongi, PA-CPhysician Assistant1851598254
- Robert Huxol, DOEmergency Medicine Physician1477509461
- Antonette Jeske, P.A.Physician Assistant1902992779
- Dianna Lange, NPNurse Practitioner1245666981
- Scott Yu, M.D.Emergency Medicine Physician1780612556
Verify Thomas Ryan Wallin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A94866Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average emergency medicine physician in 2024
177 Medicare Part D claims for 105 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Ondansetron Odt28 claims
- Cefdinir17 claims
- Hydrocodone-Acetaminophen12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Thomas Ryan Wallin among 7,751 emergency medicine physician records in California
Thomas Ryan Wallin, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 emergency medicine physician records list a practice address in Emeryville
They are 32 of the 703 NPPES records with a practice address in Emeryville, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Emeryville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Richard Doyan, M.D.Emeryville, CA 946081992740765
- Kathryn Hall-Boyer, MDEmeryville, CA 946081144240201
- Robert Huxol, DOEmeryville, CA 946081477509461
- Robert Kim, MDEmeryville, CA 946081851444384
- Anne Ledvina, MDEmeryville, CA 946081932271954
- Jeffery Leinen, M.D.Emeryville, CA 946081114983244
- Guisou MahmoudEmeryville, CA 946081164435996
- Todd McGregor, MDEmeryville, CA 946081427106400
Common questions
What is Thomas Ryan Wallin, M.D.'s NPI number?
Thomas Ryan Wallin, M.D.'s National Provider Identifier (NPI) is 1881872034, issued on Feb 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Ryan Wallin, M.D. located?
The NPPES record lists a practice address at 2100 Powell Street, Emeryville, CA, 94608. Phone: (888) 267-3880. Providers update this record themselves, so call before visiting.
How can I verify Thomas Ryan Wallin, M.D.'s license?
NPPES lists California license number A94866, 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 Thomas Ryan Wallin, M.D. prescribe under Medicare Part D?
In 2024, Thomas Ryan Wallin, M.D. had 177 Medicare Part D claims for 105 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Thomas Ryan Wallin, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.