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ALEXANDRA ELIZABETH FLESSEL MD
NPI 1003493701
Obstetrics & Gynecology in San Mateo, CA

Active since March 27, 2021PECOS EnrolledAccepts Medicare Assignment
136 N SAN MATEO DR STE 101, SAN MATEO, CA 94401(650) 344-1114 Get Directions Write a Review

NPPES record last updated: August 6, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 6, 2025, Jun 2, 2025, Mar 27, 2021 (3 updates tracked since 2021).

About Alexandra Elizabeth Flessel Md NPPES

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

ALEXANDRA ELIZABETH FLESSEL MD (NPI 1003493701) is an individual obstetrics & gynecology provider in San Mateo, California, licensed in California (A203951) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2021).

NPPES Registry Identity

NPI1003493701
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameALEXANDRA ELIZABETH FLESSELCredential: MD
Location Address136 N SAN MATEO DR STE 101San Mateo, CA 94401-2779
Mailing Address136 N San Mateo Dr Ste 101San Mateo, CA 94401-2779 · (650) 344-1114
Phone(650) 344-1114
Sole ProprietorYes
Medical School CMSWayne State University School Of MedicineGraduated 2021
Enumeration DateMarch 27, 2021
Last NPPES UpdateAugust 6, 20253 updates tracked since enumeration
NPPES CertifiedAugust 6, 2025
✔ NPI 1003493701 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A203951
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
136 N SAN MATEO DR STE 101, San Mateo, CA 94401
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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

Alexandra Elizabeth Flessel 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 ID8628472859
PECOS Enrollment IDI20250825002122
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 94401 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
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
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.

MELISSA DUNCANSON MD
Obstetrics & Gynecology
136 N SAN MATEO DR STE 101
SAN MATEO, CA 94401
San Mateo County (650) 344-1114
HENRY H HAMILTON M.D.
Obstetrics & Gynecology
136 N SAN MATEO DR STE 101
SAN MATEO, CA 94401
San Mateo County (650) 375-1800
MELISSA DUNCANSON MD INC
Obstetrics & Gynecology
136 N SAN MATEO DR STE 101
SAN MATEO, CA 94401
San Mateo County (650) 344-1114
SANDRA BERETTA MD
Obstetrics & Gynecology
136 N SAN MATEO DR STE 101
SAN MATEO, CA 94401
San Mateo County (650) 344-1114

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 Alexandra Flessel's NPI number?

The NPI number for Alexandra Flessel is 1003493701. It was assigned to this individual provider in the NPPES registry on March 27, 2021.

Where is Alexandra Flessel located?

Alexandra Flessel practices at 136 N San Mateo Dr Ste 101, San Mateo, CA 94401. The listed phone number is (650) 344-1114.

What is Alexandra Flessel's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Alexandra Flessel enrolled in Medicare?

Yes. Alexandra Flessel 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 Alexandra Flessel was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.