NPPES file of Aug 9, 2026

Stephen Gugenheim, M.D.

Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Napa, CA

Stephen Gugenheim, M.D. is a plastic surgery within the head & neck (otolaryngology) physician with a practice address in Napa, California, and NPI 1174501340, issued on Jan 6, 2006. Check the license (California G51162, 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
1174501340
Name
Stephen Gugenheim
Credential
M.D.
Primary taxonomy
Plastic Surgery within the Head & Neck (Otolaryngology) Physician 207YX0007X
License numbers
G51162 CA
L7739 TX
Self-reported in NPPES; status is on the state search
Practice location
3230 Beard RD, Napa, CA 94558
Phone
(707) 224-7400
Enumerated
Jan 6, 2006
Record last updated
Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(707) 224-7413
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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Also registered at 3230 Beard RD

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

  1. Laurel Antonucci, LCSWClinical Social Worker1346263761
  2. Edwin Chiu, M.D.Nephrology Physician1659392223
  3. Melissa Datu, APNAdult Health Nurse Practitioner1144572876
  4. George Friedman, MDFamily Medicine Physician1477647212
  5. Nagarathna Manjappa, MDNephrology Physician1710093349
  6. David Martinez, DOFamily Medicine Physician1023105178

Verify Stephen Gugenheim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G51162
    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

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95% fewer Medicare Part D claims than the average plastic surgery within the head & neck (otolaryngology) physician in 2024

19 Medicare Part D claims, against an average of 393 among the 492 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Stephen Gugenheim19
  2. Specialty average393

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.

Stephen Gugenheim among 150 plastic surgery within the head & neck (otolaryngology) physician records in California

Stephen Gugenheim, M.D. is one of 150 plastic surgery within the head & neck (otolaryngology) physician records with a practice address in California. 71% 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, 43% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 54% of these records are
  • Record last updated2021 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207YX0007X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Plastic Surgery within the Head & Neck (Otolaryngology) Physician providers in California

There are 150 plastic surgery within the head & neck (otolaryngology) physician records in California.

The 8 plastic surgery within the head & neck (otolaryngology) physician records with the nearest ZIP codes

  1. Tania Benjamin, MDCastro Valley, CA 945461093276131
  2. Zev Kahn, M.D.Castro Valley, CA 945461356310502
  3. Ronald Rubenstein, M. D.San Leandro, CA 945781467568105
  4. Nancy Wang, MDFremont, CA 945381013337492
  5. Rahul Seth, M.D.Walnut Creek, CA 945981073784682
  6. James Wu, M.D.Brentwood, CA 945131720070113
  7. Adam Marvin, M.D.Oakland, CA 946091275528572
  8. Erin Simms, MDOakland, CA 946091588735476

Common questions

What is Stephen Gugenheim, M.D.'s NPI number?

Stephen Gugenheim, M.D.'s National Provider Identifier (NPI) is 1174501340, issued on Jan 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Gugenheim, M.D. located?

The NPPES record lists a practice address at 3230 Beard RD, Napa, CA, 94558. Phone: (707) 224-7400. Providers update this record themselves, so call before visiting.

How can I verify Stephen Gugenheim, M.D.'s license?

NPPES lists California license number G51162, 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 Stephen Gugenheim, M.D. prescribe under Medicare Part D?

In 2024, Stephen Gugenheim, M.D. had 19 Medicare Part D claims; the average among plastic surgery within the head & neck (otolaryngology) physician prescribers was 393. 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.