DR. JOHN J FANGMAN MD
NPI 1881645737
Internal Medicine - Infectious Disease in San Francisco, CA

Active since May 15, 2006PECOS EnrolledAccepts Medicare Assignment
400 PARNASSUS AVE FL 2, SAN FRANCISCO, CA 94143(415) 476-9362 Get Directions Write a Review

NPPES record last updated: March 30, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 30, 2026, Jul 19, 2019 (2 updates tracked since 2019).

About Dr. John J Fangman Md NPPES

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

DR. JOHN J FANGMAN MD (NPI 1881645737) is an individual infectious disease provider in San Francisco, California, licensed in California (C206757) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and maintains a secondary practice location in Milwaukee.

NPPES Registry Identity

NPI1881645737
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. JOHN J FANGMANCredential: MD
Location Address400 PARNASSUS AVE FL 2San Francisco, CA 94143-2202
Mailing Address9200 W Wisconsin Ave, Froedtert & Med College Clin - EastMilwaukee, WI 53226-3522
Sole ProprietorNo
Medical School CMSUniversity Of Minnesota Medical SchoolGraduated 1994
Enumeration DateMay 15, 2006
Last NPPES UpdateMarch 30, 20262 updates tracked since enumeration
NPPES CertifiedMarch 30, 2026
NPI 1881645737 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses Licensed in CA · C206757 Licensed in WI · 48629
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.
400 PARNASSUS AVE FL 2, San Francisco, CA 94143

Secondary Practice Location 1

Location 1Froedtert & Med College Clin - East, 9200 West Wisconsin AvenueMilwaukee, WI 53226 · Phone (414) 805-3666

Other Identifiers 1

Medicaid31446100WI

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

Dr. John J Fangman Md 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 ID9335168996
PECOS Enrollment IDI20220124001962
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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 20

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

Pediatrics
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Nurse Practitioner
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Internal Medicine (Infectious Disease)
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Internal Medicine (Infectious Disease)
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Surgery
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Pediatrics
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Pediatrics
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143
Physician Assistant (Surgical)
400 PARNASSUS AVE FL 2
SAN FRANCISCO, CA 94143

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 John Fangman's NPI number?

The NPI number for John Fangman is 1881645737. It was assigned to this individual provider in the NPPES registry on May 15, 2006.

Where is John Fangman located?

John Fangman practices at 400 Parnassus Ave Fl 2, San Francisco, CA 94143. The listed phone number is (415) 476-9362.

What is John Fangman's specialty?

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

Is John Fangman enrolled in Medicare?

Yes. John Fangman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is John Fangman affiliated with any hospitals?

According to CMS data, John Fangman is affiliated with North Shore Medical Center -.

When was this NPI record last updated?

The NPPES record for John Fangman was last updated on March 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.