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DR. ALEXANDER DAVID BOROWSKY M.D.
NPI 1891777512
Pathology - Anatomic Pathology & Clinical Pathology in San Francisco, CA

Active since November 17, 2005PECOS EnrolledAccepts Medicare Assignment
1825 4TH ST, SAN FRANCISCO, CA 94143(415) 353-1613 Get Directions Write a Review

NPPES record last updated: August 25, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Alexander David Borowsky M.d. NPPES

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

DR. ALEXANDER DAVID BOROWSKY M.D. (NPI 1891777512) is an individual anatomic pathology & clinical pathology provider in San Francisco, California, licensed in California (A77194) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Vanderbilt University School Of Medicine (1994).

NPPES Registry Identity

NPI1891777512
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. ALEXANDER DAVID BOROWSKYCredential: M.D.
Location Address1825 4TH STSan Francisco, CA 94143-2350
Mailing Address1825 4th StSan Francisco, CA 94143-2350
Phone(415) 353-1613
Sole ProprietorNo
Medical School CMSVanderbilt University School Of MedicineGraduated 1994
Enumeration DateNovember 17, 2005
Last NPPES UpdateAugust 25, 2025
NPPES CertifiedAugust 25, 2025
✔ NPI 1891777512 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A77194
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedSpecialistTaxonomy 174400000X · License A77194 (CA)
1825 4TH ST, San Francisco, CA 94143
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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 and accepts Medicare assignment

Dr. Alexander David Borowsky 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 ID3678758430
PECOS Enrollment IDI20110421000457
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 7

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.

Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure 88377
Microscopic genetic analysis of tissue is a detailed lab process that examines your cells' genetic material. If more than one stain procedure is needed, it's termed an 'additional multiplex stain procedure'. This helps to highlight different components within your cells, aiding in accurate diagnosis and treatment planning.
164 services142 patients
Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
107 services49 patients
Microscopic genetic analysis of tumor, manual 88360
Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.
65 services17 patients
Pathology examination of tissue using a microscope, moderately high complexity 88307
A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.
60 services21 patients
Pathology examination of specimen during surgery, first tissue block 88331
A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.
39 services13 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
17 services17 patients

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.

SONIA LOUISE BADHEKA D.O.
Obstetrics & Gynecology
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-3400
JULIA CHANDLER MD
Surgery
1825 4TH ST, 3RD FLOOR BOX 1710
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7070
MS. DANESSA VENITA COLES NP
Nurse Practitioner (Acute Care)
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-4616
HANNAH LIGHT-OLSON MD
Student in an Organized Health Care Education/Training Program
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-3000
CARISSA LONGO MD
Student in an Organized Health Care Education/Training Program
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1613
DR. DASHA PEIRIS MD
Student in an Organized Health Care Education/Training Program
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7070
NICOLE ANNE CLEM ARNP
Nurse Practitioner
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7175
MARIAM TALEB MD
Pediatrics
1825 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2008

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 Borowsky's NPI number?

The NPI number for Alexander Borowsky is 1891777512. It was assigned to this individual provider in the NPPES registry on November 17, 2005.

Where is Alexander Borowsky located?

Alexander Borowsky practices at 1825 4th St, San Francisco, CA 94143. The listed phone number is (415) 353-1613.

What is Alexander Borowsky's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Alexander Borowsky enrolled in Medicare?

Yes. Alexander Borowsky 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 Borowsky was last updated on August 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.