DR. SHERI L TASK M.D.
NPI 1124063789
Obstetrics & Gynecology in Hayward, CA

Q: What is Sheri Task's NPI number?

The NPI number for Sheri Task is 1124063789. It was assigned to this individual provider in the NPPES registry on June 18, 2006.

Q: What is Sheri Task's specialty?

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

Q: Is Sheri Task enrolled in Medicare?

No. Sheri Task has opted out of Medicare through August 6, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Sheri Task was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 18, 2006Opted out of Medicare · through Aug 6, 2028

27212 CALAROGA AVE, HAYWARD, CA 94545(510) 785-5000(510) 784-2402 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Sheri L Task M.d. NPPES

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

DR. SHERI L TASK M.D. (NPI 1124063789) is an individual obstetrics & gynecology provider in Hayward, California, licensed in California (G79269) and active in the NPI registry since June 2006. She has opted out of Medicare through August 6, 2028.

NPPES Registry Identity

NPI1124063789

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. SHERI L TASKCredential: M.D.

Location Address27212 CALAROGA AVEHayward, CA 94545-4339

Mailing Address27212 Calaroga AveHayward, CA 94545-4339 · (510) 785-5000 · Fax (510) 784-2402

Phone(510) 785-5000

Fax(510) 784-2402

Sole ProprietorNo

Enumeration DateJune 18, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1124063789 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · G79269

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.

27212 CALAROGA AVE, Hayward, CA 94545

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Sheri L Task M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from August 6, 2020 through August 6, 2028.

Opt-Out Effective DateAugust 6, 2020

Opt-Out In Effect ThroughAugust 6, 2028Opt-out affidavits renew automatically every two years unless cancelled

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.

CAROLYN E. HUDSON M.D.

Pediatrics