Winthrop H. Hall, MD
Otolaryngology Physician · Novato, CA
Winthrop H. Hall, MD is an otolaryngology physician with a practice address in Novato, California, and NPI 1871662437, issued on Nov 7, 2006. Check the license (California C25895, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Winthrop H. Hall
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- C25895 CA
Self-reported in NPPES; status is on the state search - Practice location
- 165 Rowland Way, Novato, CA 94945
- Phone
- (415) 897-3070
- Enumerated
- Nov 7, 2006
- Record last updated
- Aug 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (415) 897-5485
- Medicaid ID
- 00C258950 CA
- Medicare enrollment
- Enrolled (PECOS I20081115000093); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 1962
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 165 Rowland Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Miguel Delgado, M.D.Specialist1376578591
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- Susan Hollander, N.P.Nurse Practitioner1447469440
- Nicholas Keitzer, DPTOrthopedic Physical Therapist1669407433
Verify Winthrop H. Hall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C25895Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average otolaryngology physician in 2024
147 Medicare Part D claims for 68 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin40 claims
- Ofloxacin14 claims
- Amoxicillin-Clavulanate Potass11 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 MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Winthrop H. Hall among 1,212 otolaryngology physician records in California
Winthrop H. Hall, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1962 · median 2004 among the 818 with a school on file
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Novato → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Herbert Newburger, MDPetaluma, CA 949521629314265
- Dennis McLeod, MDPetaluma, CA 949541407919939
- Romeo Agbayani, MDGreenbrae, CA 949041205909603
- Daniel Flis, M.D.Greenbrae, CA 949041316266042
- Kambridge Hribar, MDGreenbrae, CA 949041619100195
- Francis Parnell, M.D.Greenbrae, CA 949041861649188
- Michael Shapiro, MDGreenbrae, CA 949041881786549
- Jeffrey Chien, MDSan Rafael, CA 949031770667776
Common questions
What is Winthrop H. Hall, MD's NPI number?
Winthrop H. Hall, MD's National Provider Identifier (NPI) is 1871662437, issued on Nov 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winthrop H. Hall, MD located?
The NPPES record lists a practice address at 165 Rowland Way, Novato, CA, 94945. Phone: (415) 897-3070. Providers update this record themselves, so call before visiting.
How can I verify Winthrop H. Hall, MD's license?
NPPES lists California license number C25895, 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 Winthrop H. Hall, MD prescribe under Medicare Part D?
In 2024, Winthrop H. Hall, MD had 147 Medicare Part D claims for 68 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Winthrop H. Hall, MD's MIPS final score?
The 2023 MIPS final score is 0 of 100. 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.