NPPES file of Aug 9, 2026

Jennifer Ellen Guy, M.D.

Transplant Hepatology Physician · San Francisco, CA

Jennifer Ellen Guy, M.D. is a transplant hepatology physician with a practice address in San Francisco, California, and NPI 1710137872, issued on Sep 25, 2008. Check the license (California A86055, 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
1710137872
Name
Jennifer Ellen Guy
Credential
M.D.
Primary taxonomy
Transplant Hepatology Physician 207RT0003X
License number
A86055 CA
Self-reported in NPPES; status is on the state search
Practice location
1100 Van Ness Ave, San Francisco, CA 94109
Phone
(415) 600-1000
Enumerated
Sep 25, 2008
Record last updated
Nov 16, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(415) 558-7051
Medicare enrollment
Enrolled (PECOS I20090717000303); accepts Medicare assignment
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 transplant hepatology physician records → All 42 in California → Look up another NPI →

Also registered at 1100 Van Ness Ave

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

  1. Anousheh Afjei, MDInternal Medicine Physician1992365431
  2. Mohammed Ahmed, MDInternal Medicine Physician1700245115
  3. Haila AlbgalFamily Nurse Practitioner1417566043
  4. Ashley Arnold, LCSWClinical Social Worker1710559687
  5. Anjali Asrani, NPNurse Practitioner1184279770
  6. Ginny BaoEndocrinology, Diabetes & Metabolism Physician1801383286

Verify Jennifer Ellen Guy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A86055    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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55% more Medicare Part D claims than the average transplant hepatology physician in 2024

1,038 Medicare Part D claims for 138 beneficiaries, against an average of 669 among the 251 providers of this specialty who prescribed in Part D. 27 claims were for opioids.

  1. Jennifer Guy1,038
  2. Specialty average669

Most prescribed

  1. Tacrolimus105 claims
  2. Xifaxan83 claims
  3. Entecavir79 claims
  4. Vemlidy75 claims
  5. Ursodiol69 claims
  6. Pantoprazole Sodium63 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: $145.21

2 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 193 providers of this specialty with any payment received $10,299.21 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jennifer Guy$145
  2. Specialty average$10,299

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

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSan Francisco, CA

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

Jennifer Ellen Guy among 42 transplant hepatology physician records in California

Jennifer Ellen Guy, M.D. is one of 42 transplant hepatology physician records with a practice address in California. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 40% newer
  • In a Medicare fileYes · 98% of these records are
  • In the CMS Doctors and Clinicians fileYes · 90% of these records are
  • Graduated2002 · median 2005 among the 38 with a school on file
  • Record last updated2020 · 29% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RT0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Transplant Hepatology Physician providers in California

There are 42 transplant hepatology physician records in California.

All 42 in California → Every provider in San Francisco → Transplant Hepatology Physician nationwide →

The 8 transplant hepatology physician records with the nearest ZIP codes

  1. Stewart Cooper, M.D.San Francisco, CA 941091780604645
  2. Timothy Davern, MDSan Francisco, CA 941091699723379
  3. Edward Holt, MDSan Francisco, CA 941091891816369
  4. Raphael Merriman, MDSan Francisco, CA 941091942258728
  5. Adil Wakil, MDSan Francisco, CA 941091043237712
  6. Kidist Yimam, M.D.San Francisco, CA 941091639321839
  7. Chanda Ho, MDSan Francisco, CA 941151689791121
  8. Jennifer Lai, M.D., M.B.A.San Francisco, CA 941171649397241

Common questions

What is Jennifer Ellen Guy, M.D.'s NPI number?

Jennifer Ellen Guy, M.D.'s National Provider Identifier (NPI) is 1710137872, issued on Sep 25, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Ellen Guy, M.D. located?

The NPPES record lists a practice address at 1100 Van Ness Ave, San Francisco, CA, 94109. Phone: (415) 600-1000. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Ellen Guy, M.D.'s license?

NPPES lists California license number A86055, 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 Jennifer Ellen Guy, M.D. prescribe under Medicare Part D?

In 2024, Jennifer Ellen Guy, M.D. had 1,038 Medicare Part D claims for 138 beneficiaries; the average among transplant hepatology physician prescribers was 669. 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.