NPPES file of Aug 9, 2026

Nathan Becker, M.D.

Endocrinology, Diabetes & Metabolism Physician · San Francisco, CA

Nathan Becker, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in San Francisco, California, and NPI 1972696250, issued on Oct 1, 2006. Check the license (California C301040, 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
1972696250
Name
Nathan Becker
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
C301040 CA
Self-reported in NPPES; status is on the state search
Practice location
350 Parnassus Ave, San Francisco, CA 94117
Phone
(415) 681-7707
Enumerated
Oct 1, 2006
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(415) 681-0695
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). 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 350 Parnassus Ave

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

  1. Karen Bagatelos, M.S.N.,N.P.Nurse Practitioner1780881045
  2. Eric Buxton, M.D.Endocrinology, Diabetes & Metabolism Physician1134210362
  3. Alan Chong, D.D.SGeneral Practice Dentistry1013265701
  4. Gregory Chong, D.D.S.General Practice Dentistry1023130747
  5. Thomas Cicciarelli, PSY.D.Clinical Psychologist1598871865
  6. Sarah Dobbins, MPH, RNPsychiatric/Mental Health Nurse Practitioner1942750815

Verify Nathan Becker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C301040    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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58% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

4,145 Medicare Part D claims for 314 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.

  1. Nathan Becker4,145
  2. Specialty average2,630

Most prescribed

  1. Synthroid931 claims
  2. Liothyronine Sodium773 claims
  3. Metformin Hcl Er386 claims
  4. Tirosint251 claims
  5. Olmesartan Medoxomil133 claims
  6. Rybelsus118 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.

Industry payments in 2024: $667.71

28 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathan Becker$667.71
  2. Specialty average$5,742.15

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Nathan Becker among 1,131 endocrinology, diabetes & metabolism physician records in California

Nathan Becker, 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 54% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2007 · 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 San Francisco → Endocrinology, Diabetes & Metabolism Physician nationwide →

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

  1. Eric Buxton, M.D.San Francisco, CA 941171134210362
  2. Paul Fitzgerald, M.D.San Francisco, CA 941171326356460
  3. H. Michenfelder, M.D.San Francisco, CA 941171710076534
  4. E. Myers, M.D.San Francisco, CA 941171992894711
  5. Yi Brenda Shue, M.D.San Francisco, CA 941171396792610
  6. Susan Tibuni-Sanders, MDSan Franscico, CA 941171124219316
  7. Philip Frost, M.DSan Francisco, CA 941181912905928
  8. Steven Harris, M.D.San Francisco, CA 941151104847532

Common questions

What is Nathan Becker, M.D.'s NPI number?

Nathan Becker, M.D.'s National Provider Identifier (NPI) is 1972696250, issued on Oct 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nathan Becker, M.D. located?

The NPPES record lists a practice address at 350 Parnassus Ave, San Francisco, CA, 94117. Phone: (415) 681-7707. Providers update this record themselves, so call before visiting.

How can I verify Nathan Becker, M.D.'s license?

NPPES lists California license number C301040, 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 Nathan Becker, M.D. prescribe under Medicare Part D?

In 2024, Nathan Becker, M.D. had 4,145 Medicare Part D claims for 314 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.