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ALEXANDER LOUIS KOSTRINSKY-THOMAS DO
NPI 1700528833
Hospitalist in San Francisco, CA

Active since April 09, 2022PECOS EnrolledAccepts Medicare Assignment
10 KORET WAY, SAN FRANCISCO, CA 94143(415) 514-1378 Get Directions Write a Review

NPPES record last updated: June 7, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 7, 2025, Apr 9, 2022 (2 updates tracked since 2022).

About Alexander Louis Kostrinsky-thomas Do NPPES

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

ALEXANDER LOUIS KOSTRINSKY-THOMAS DO (NPI 1700528833) is an individual hospitalist provider in San Francisco, California, licensed in California (20A21736) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Jose, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1700528833
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameALEXANDER LOUIS KOSTRINSKY-THOMASCredential: DO
Location Address10 KORET WAYSan Francisco, CA 94143-2218
Mailing Address751 S Bascom AveSan Jose, CA 95128-2699
Phone(415) 514-1378
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateApril 9, 2022
Last NPPES UpdateJune 7, 20252 updates tracked since enumeration
NPPES CertifiedJune 7, 2025
✔ NPI 1700528833 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CA · 20A21736
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
10 KORET WAY, San Francisco, CA 94143
Open in Google Maps ↗

Secondary Practice Location 1

Location 1751 S Bascom AveSan Jose, CA 95128-2604 · Phone (408) 885-5000

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

Alexander Louis Kostrinsky-thomas Do 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 ID1850820796
PECOS Enrollment IDI20251105003278
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 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 4

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

DR. DIAMOND Y TAM MD
Ophthalmology
10 KORET WAY, ROOM K-301
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1922
DR. MICHAEL I SEIDER M.D.
Ophthalmology
10 KORET WAY
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1922
FRANK BRODIE MD
Ophthalmology
10 KORET WAY, K302
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-2896
DR. JOSEPH BROOKS CRAWFORD MD
Ophthalmology
10 KORET WAY
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-2897

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 Alexander Kostrinsky-thomas's NPI number?

The NPI number for Alexander Kostrinsky-thomas is 1700528833. It was assigned to this individual provider in the NPPES registry on April 9, 2022.

Where is Alexander Kostrinsky-thomas located?

Alexander Kostrinsky-thomas practices at 10 Koret Way, San Francisco, CA 94143. The listed phone number is (415) 514-1378.

What is Alexander Kostrinsky-thomas's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Alexander Kostrinsky-thomas enrolled in Medicare?

Yes. Alexander Kostrinsky-thomas 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 Alexander Kostrinsky-thomas was last updated on June 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.