Amy Guzdar
Internal Medicine Physician · Novato, CA
Amy Guzdar is an internal medicine physician with a practice address in Novato, California, and NPI 1679100614, issued on Mar 26, 2020. Check the license (California A185363, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amy Guzdar
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A185363 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 Rowland Way Ste 200, Novato, CA 94945
- Phone
- (415) 878-7200
- Enumerated
- Mar 26, 2020
- Record last updated
- Nov 19, 2024
- Fax
- (415) 369-1387
- Medicare enrollment
- Enrolled (PECOS I20231215003020); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 101 Rowland Way Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Glatt, MDFamily Medicine Physician1306936729
- Sukruti Udeshi, MDFamily Medicine Physician1821582149
- Adaeze Udezue, M.DInternal Medicine Physician1457412736
Verify Amy Guzdar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A185363Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,509 Medicare Part D claims for 311 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Atorvastatin Calcium150 claims
- Amlodipine Besylate75 claims
- Levothyroxine Sodium73 claims
- Losartan Potassium51 claims
- Gabapentin48 claims
- Fluticasone Propionate46 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
- Sutter Bay Medical FoundationNovato, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Guzdar among 17,696 internal medicine physician records in California
Amy Guzdar is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Novato
They are 27 of the 934 NPPES records with a practice address in Novato, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Novato → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Conant, MDNovato, CA 949451568546539
- Shawn Donald, MDNovato, CA 949451801970876
- William Elliott, MDNovato, CA 949451144304122
- Amy Ewing, MDNovato, CA 949451861576860
- Barbara Finzen, M.D.Novato, CA 949451134225352
- Ranjit Hundal, M.D.Novato, CA 949451023107976
- Michael Kwok, M.D.Novato, CA 949451124119235
- Robert Lavaysse, MDNovato, CA 949451093899072
Common questions
What is Amy Guzdar's NPI number?
Amy Guzdar's National Provider Identifier (NPI) is 1679100614, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Amy Guzdar located?
The NPPES record lists a practice address at 101 Rowland Way Ste 200, Novato, CA, 94945. Phone: (415) 878-7200. Providers update this record themselves, so call before visiting.
How can I verify Amy Guzdar's license?
NPPES lists California license number A185363, 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 Amy Guzdar prescribe under Medicare Part D?
In 2024, Amy Guzdar had 1,509 Medicare Part D claims for 311 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.