CLAIRE HELEN GILBERT PACKER MD, MPH
NPI 1730641275
Obstetrics & Gynecology in San Francisco, CA

Active since April 03, 2019PECOS Enrolled
1975 4TH ST, SAN FRANCISCO, CA 94143(415) 353-2566(415) 353-3533 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 16, 2026, Jul 5, 2022, Apr 3, 2019 (3 updates tracked since 2019).

About Claire Helen Gilbert Packer Md, Mph NPPES

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

CLAIRE HELEN GILBERT PACKER MD, MPH (NPI 1730641275) is an individual obstetrics & gynecology provider in San Francisco, California, licensed in California (A208132) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Oregon Health Sciences University School Of Medicine (2022).

NPPES Registry Identity

NPI1730641275
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameCLAIRE HELEN GILBERT PACKERCredential: MD, MPH
Location Address1975 4TH STSan Francisco, CA 94143-2351
Mailing Address75 Francis StBoston, MA 02115-6110 · (617) 732-7801
Fax(415) 353-3533
Sole ProprietorNo
Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2022
Enumeration DateApril 3, 2019
Last NPPES UpdateJuly 16, 20263 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1730641275 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in CA · A208132✔ Licensed in MA · 293210
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 ListedObstetrics & Gynecology · Maternal & Fetal MedicineTaxonomy 207VM0101X · License A208132 (CA)
1975 4TH ST, San Francisco, CA 94143

Secondary Practice Location 1

Location 175 Francis StBoston, MA 02115-6110 · Phone (617) 732-7801

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Claire Helen Gilbert Packer Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4183005473
PECOS Enrollment IDI20260731001185
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Claire Packer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Surgery
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 761 clinicians in this Medicare group
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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
$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 20

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

Physical Therapist
1975 4TH ST
SAN FRANCISCO, CA 94143
Pediatrics
1975 4TH ST
SAN FRANCISCO, CA 94143
Anesthesiology
1975 4TH ST
SAN FRANCISCO, CA 94143
Nurse Practitioner (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
Pharmacist (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
Social Worker (Clinical)
1975 4TH ST
SAN FRANCISCO, CA 94143
Pediatrics (Adolescent Medicine)
1975 4TH ST
SAN FRANCISCO, CA 94143
Nurse Practitioner (Neonatal)
1975 4TH ST
SAN FRANCISCO, CA 94143

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 Claire Packer's NPI number?

The NPI number for Claire Packer is 1730641275. It was assigned to this individual provider in the NPPES registry on April 3, 2019.

Where is Claire Packer located?

Claire Packer practices at 1975 4th St, San Francisco, CA 94143. The listed phone number is (415) 353-2566.

What is Claire Packer's specialty?

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

Is Claire Packer enrolled in Medicare?

Yes. Claire Packer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Claire Packer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Claire Packer reassigns Medicare benefits to 3 organizations: Ucsf Dept Of Surgery (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Claire Packer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Claire Packer was last updated on July 16, 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.