GAUTAM TAMMEWAR MD
NPI 1669000220
Psychiatry & Neurology - Neurology in San Francisco, CA

Active since March 30, 2020PECOS EnrolledAccepts Medicare Assignment
1651 4TH ST STE 212, SAN FRANCISCO, CA 94158(415) 353-2273(415) 353-2898 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Gautam Tammewar Md NPPES

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

GAUTAM TAMMEWAR MD (NPI 1669000220) is an individual neurology provider in San Francisco, California, licensed in California (A192940) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, maintains a secondary practice location in Baltimore, and is a graduate of University Of Utah School Of Medicine (2020).

NPPES Registry Identity

NPI1669000220
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameGAUTAM TAMMEWARCredential: MD
Location Address1651 4TH ST STE 212San Francisco, CA 94158-2324
Mailing Address1651 4th St Ste 212San Francisco, CA 94158-2324 · (415) 353-2273 · Fax (415) 353-2898
Fax(415) 353-2898
Sole ProprietorNo
Medical School CMSUniversity Of Utah School Of MedicineGraduated 2020
Enumeration DateMarch 30, 2020
Last NPPES UpdateOctober 2, 2025
NPPES CertifiedOctober 2, 2025
NPI 1669000220 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License Licensed in CA · A192940
Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

1651 4TH ST STE 212, San Francisco, CA 94158

Secondary Practice Location 1

Location 122 S Greene St Rm N3E09Baltimore, MD 21201-1544 · Phone (818) 497-0168

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

Gautam Tammewar 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 ID7517377005
PECOS Enrollment IDI20240718003467
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 2

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.

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
85 services18 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.
15 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94158 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 10

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

Psychiatry & Neurology (Neurology)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Psychiatry & Neurology (Neurology)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Clinical Neuropsychologist
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Nurse Practitioner (Psychiatric/Mental Health)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Social Worker (Clinical)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Psychiatry & Neurology (Neurology)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Psychologist (Clinical)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158
Psychologist (Clinical)
1651 4TH ST STE 212
SAN FRANCISCO, CA 94158

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 Gautam Tammewar's NPI number?

The NPI number for Gautam Tammewar is 1669000220. It was assigned to this individual provider in the NPPES registry on March 30, 2020.

Where is Gautam Tammewar located?

Gautam Tammewar practices at 1651 4th St Ste 212, San Francisco, CA 94158. The listed phone number is (415) 353-2273.

What is Gautam Tammewar's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Gautam Tammewar enrolled in Medicare?

Yes. Gautam Tammewar 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.

When was this NPI record last updated?

The NPPES record for Gautam Tammewar was last updated on October 2, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.