Fern J. Thomas, M.D.
Psychiatry Physician · Oneonta, NY
Fern J. Thomas, M.D. is a psychiatry physician with a practice address in Oneonta, New York, and NPI 1063401792, issued on Oct 15, 2005. Check the license (New York 199660, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Fern J. Thomas
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 199660 NY
Self-reported in NPPES; status is on the state search - Practice location
- 531 Southside Dr, Oneonta, NY 13820
- Phone
- (607) 436-9030
- Enumerated
- Oct 15, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (607) 436-9031
- Medicaid ID
- 02265992 NY
- Medicare enrollment
- Enrolled (PECOS I20040429001443); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1990
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →
Also registered at 531 Southside Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fern J. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 199660Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% more Medicare Part D claims than the average psychiatry physician in 2024
1,496 Medicare Part D claims for 74 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Hydroxyzine Hcl107 claims
- Clonazepam84 claims
- Sertraline Hcl69 claims
- Risperidone66 claims
- Quetiapine Fumarate61 claims
- Clozapine54 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 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).
Bills Medicare through one group practice
- Delaware CountyWalton, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fern J. Thomas among 6,589 psychiatry physician records in New York
Fern J. Thomas, M.D. is one of 6,589 psychiatry physician records with a practice address in New York. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated1990 · median 2002 among the 2,559 with a school on file
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in New York
There are 6,589 psychiatry physician records in New York.
All 6,589 in New York → Every provider in Oneonta → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tariq Mahmood, M.D.Oneonta, NY 138201548387871
- Samuel Press, M.D.Oneonta, NY 138201851327985
- Janice StalterOneonta, NY 138201609969864
- Sarah Ricketts, MDMorris, NY 138081295803781
- Salvatore Argiro, M.D.Vestal, NY 138501659535151
- Jill Baron, MDJohnson City, NY 137901356417661
- Sreenivasa Desai, MDVestal, NY 138501265609937
- Nina Pesante, MDVestal, NY 138501437125978
Common questions
What is Fern J. Thomas, M.D.'s NPI number?
Fern J. Thomas, M.D.'s National Provider Identifier (NPI) is 1063401792, issued on Oct 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Fern J. Thomas, M.D. located?
The NPPES record lists a practice address at 531 Southside Dr, Oneonta, NY, 13820. Phone: (607) 436-9030. Providers update this record themselves, so call before visiting.
How can I verify Fern J. Thomas, M.D.'s license?
NPPES lists New York license number 199660, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Fern J. Thomas, M.D. prescribe under Medicare Part D?
In 2024, Fern J. Thomas, M.D. had 1,496 Medicare Part D claims for 74 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is Fern J. Thomas, M.D.'s MIPS final score?
The 2023 MIPS final score is 94 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.