NPPES file of Aug 9, 2026

Kendal Lee Hamann, M.D.

Endocrinology, Diabetes & Metabolism Physician · Santa Rosa, CA

Kendal Lee Hamann, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Santa Rosa, California, and NPI 1285615922, issued on Nov 9, 2005. Check the license (California A81803, 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
1285615922
Name
Kendal Lee Hamann
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
A81803 CA
Self-reported in NPPES; status is on the state search
Practice location
3883 Airway Dr Ste 201, Santa Rosa, CA 95403
Phone
(707) 521-7735
Enumerated
Nov 9, 2005
Record last updated
Jan 14, 2025
Fax
(707) 573-5422
Medicare enrollment
Enrolled (PECOS I20040624000778); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 2001
Telehealth
Offers telehealth (CMS)
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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8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →

Also registered at 3883 Airway Dr Ste 201

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

  1. Michael Magnotti, MD, FACE, ECNUEndocrinology, Diabetes & Metabolism Physician1134324585
  2. Wai Phyo Thi, MDEndocrinology, Diabetes & Metabolism Physician1457913972

Verify Kendal Lee Hamann in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A81803    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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7% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

2,458 Medicare Part D claims for 535 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.

  1. Kendal Hamann2,458
  2. Specialty average2,630

Most prescribed

  1. Levothyroxine Sodium592 claims
  2. Methimazole199 claims
  3. Alendronate Sodium154 claims
  4. Insulin Glargine-Yfgn132 claims
  5. Humalog120 claims
  6. Atorvastatin Calcium64 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.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSanta Rosa, CA

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

Kendal Lee Hamann among 1,131 endocrinology, diabetes & metabolism physician records in California

Kendal Lee Hamann, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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, 95% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2001 · median 2003 among the 779 with a school on file
  • Record last updated2025 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in California

There are 1,131 endocrinology, diabetes & metabolism physician records in California.

All 1,131 in California → Every provider in Santa Rosa → Endocrinology, Diabetes & Metabolism Physician nationwide →

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Amie Cai, MDSanta Rosa, CA 954031043879968
  2. Brian Khong, DOSanta Rosa, CA 954031649765405
  3. Michael Magnotti, MD, FACE, ECNUSanta Rosa, CA 954031134324585
  4. Jerome Minkoff, MDSanta Rosa, CA 954031801970975
  5. Wai Phyo Thi, MDSanta Rosa, CA 954031457913972
  6. Beatrice BrumleySanta Rosa, CA 954051134689474
  7. Yuichiro Nakai, M.D.Santa Rosa, CA 954051497739114
  8. Rochelle Villanueva, MDSonora, CA 953701932143062

Common questions

What is Kendal Lee Hamann, M.D.'s NPI number?

Kendal Lee Hamann, M.D.'s National Provider Identifier (NPI) is 1285615922, issued on Nov 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Kendal Lee Hamann, M.D. located?

The NPPES record lists a practice address at 3883 Airway Dr Ste 201, Santa Rosa, CA, 95403. Phone: (707) 521-7735. Providers update this record themselves, so call before visiting.

How can I verify Kendal Lee Hamann, M.D.'s license?

NPPES lists California license number A81803, 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 Kendal Lee Hamann, M.D. prescribe under Medicare Part D?

In 2024, Kendal Lee Hamann, M.D. had 2,458 Medicare Part D claims for 535 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.