JENNIFER ELLEN GUY M.D.
NPI 1710137872
Internal Medicine - Transplant Hepatology in San Francisco, CA

Q: What is Jennifer Guy's NPI number?

The NPI number for Jennifer Guy is 1710137872. It was assigned to this individual provider in the NPPES registry on September 25, 2008.

Q: What is Jennifer Guy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Transplant Hepatology, with taxonomy code 207RT0003X.

Q: When was this NPI record last updated?

The NPPES record for Jennifer Guy was last updated on November 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 25, 2008PECOS EnrolledAccepts Medicare Assignment

1100 VAN NESS AVE, SAN FRANCISCO, CA 94109(415) 600-1000(415) 558-7051 Get Directions Write a Review

NPPES record last updated: November 16, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 16, 2020, Jan 10, 2020 (2 updates tracked since 2020).

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About Jennifer Ellen Guy M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JENNIFER ELLEN GUY M.D. (NPI 1710137872) is an individual transplant hepatology provider in San Francisco, California, licensed in California (A86055) and active in the NPI registry since September 2008. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1710137872

Entity TypeIndividualFemale

Primary Taxonomy207RT0003X

Provider Legal NameJENNIFER ELLEN GUYCredential: M.D.

Location Address1100 VAN NESS AVESan Francisco, CA 94109-6978

Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (415) 600-1000 · Fax (415) 558-7051

Phone(415) 600-1000

Fax(415) 558-7051

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateSeptember 25, 2008

Last NPPES UpdateNovember 16, 20202 updates tracked since enumeration

NPPES CertifiedNovember 16, 2020

✔ NPI 1710137872 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Transplant HepatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RT0003X

License✔ Licensed in CA · A86055

Definition

An internist with special knowledge and the skill required of a gastroenterologist to care for patients prior to and following hepatic transplantation that spans all phases of liver transplantation. Selection of appropriate recipients requires assessment by a team having experience in evaluating the severity and prognosis of patients with liver disease.

Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X · License A86055 (CA)

Also ListedInternal Medicine · HepatologyTaxonomy 207RI0008X · License A86055 (CA)

1100 VAN NESS AVE, San Francisco, CA 94109

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Secondary Practice Locations 2

Location 1701 E El Camino RealMountain View, CA 94040-2833 · Phone (415) 600-1000 · Fax (650) 934-7574

Location 23300 Webster St Ste 202Oakland, CA 94609-3120 · Phone (510) 208-1777 · Fax (510) 208-1776

Other Identifiers 1

OtherA86055CA · State Medical License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jennifer Ellen Guy M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9335291640

PECOS Enrollment IDI20090717000303

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

226 services55 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

207 services108 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

54 services48 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

51 services45 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

25 services25 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

24 services16 patients

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

10 suppliers175 claims15,739 services$0.29 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier16 claims3,700 services$0.01 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

2 suppliers50 claims5,460 services$0.18 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

2 suppliers25 claims2,280 services$1.02 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

11 suppliers167 claims167 services$17.79 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

8 suppliers113 claims149 services$12.03 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHIALIN LEE PA-C

Physician Assistant