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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK TENFORDE MD, PHD, MPH
NPI 1528367901
Internal Medicine - Infectious Disease in San Francisco, CA

Active since March 24, 2011PECOS Enrolled
27 VAN NESS AVE, SAN FRANCISCO, CA 94102(628) 219-2246 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

About Dr. Mark Tenforde Md, Phd, Mph NPPES

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

DR. MARK TENFORDE MD, PHD, MPH (NPI 1528367901) is an individual infectious disease provider in San Francisco, California, licensed in California (C203938) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1528367901
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. MARK TENFORDECredential: MD, PHD, MPH
Location Address27 VAN NESS AVESan Francisco, CA 94102-6012
Mailing Address25 Van Ness Ave Fl 5San Francisco, CA 94102-6033 · (628) 219-2246
Phone(628) 219-2246
Sole ProprietorYes
Enumeration DateMarch 24, 2011
Last NPPES UpdateSeptember 23, 2026
NPPES CertifiedSeptember 23, 2026
✔ NPI 1528367901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · C203938
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License C203938 (CA)
27 VAN NESS AVE, San Francisco, CA 94102
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Tenforde Md, Phd, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

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

CITY AND COUNTY OF SAN FRANCISCO
Clinic/Center (Public Health, State or Local)
27 VAN NESS AVE
SAN FRANCISCO, CA 94102
San Francisco County (415) 554-2625
ELIZABETH ABAUNZA NP
Nurse Practitioner
27 VAN NESS AVE
SAN FRANCISCO, CA 94102
San Francisco County (628) 754-5500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Tenforde's NPI number?

The NPI number for Mark Tenforde is 1528367901. It was assigned to this individual provider in the NPPES registry on March 24, 2011.

Where is Mark Tenforde located?

Mark Tenforde practices at 27 Van Ness Ave, San Francisco, CA 94102. The listed phone number is (628) 219-2246.

What is Mark Tenforde's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Mark Tenforde enrolled in Medicare?

Yes. Mark Tenforde is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Tenforde was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.