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DR. SPENSER HARVEY PERLOFF M.D.
NPI 1861855272
Obstetrics & Gynecology in San Ramon, CA

Active since April 01, 2016PECOS EnrolledAccepts Medicare Assignment
86.88/100
CMS Quality Rating
12677 ALCOSTA BLVD, SAN RAMON, CA 94583(925) 254-9840 Get Directions Write a Review

NPPES record last updated: March 26, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 26, 2025, Jan 26, 2023, Aug 27, 2020 and 3 more (6 updates tracked since 2016).

About Dr. Spenser Harvey Perloff M.d. NPPES

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

DR. SPENSER HARVEY PERLOFF M.D. (NPI 1861855272) is an individual obstetrics & gynecology provider in San Ramon, California, licensed in California (C200957) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1861855272
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. SPENSER HARVEY PERLOFFCredential: M.D.
Location Address12677 ALCOSTA BLVDSan Ramon, CA 94583-4423
Mailing Address1450 Treat Blvd Ste 300Walnut Creek, CA 94597-2168 · (925) 952-2828 · Fax (816) 404-8014
Phone(925) 254-9840
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateApril 1, 2016
Last NPPES UpdateMarch 26, 20256 updates tracked since enumeration
NPPES CertifiedMarch 26, 2025
✔ NPI 1861855272 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in CA · C200957✔ Licensed in MO · 2022049875✔ Licensed in OK · 37070
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.
12677 ALCOSTA BLVD, San Ramon, CA 94583
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Spenser Harvey Perloff 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 ID8628361904
PECOS Enrollment IDI20250403000892
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 Spenser Perloff reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

John Muir Physician Network
12 mi
General Practice
1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597
  • Reassigned Medicare billing, California enrollment
  • 650 clinicians in this Medicare group
NPI 1841407665 (925) 296-9872
Creek Nation Hospital & Clinics
1,431 mi
Family Medicine
1800 E COPLIN ST
Okemah, OK 74859
  • Reassigned Medicare billing, Texas enrollment
  • 655 clinicians in this Medicare group
NPI 1467053173 (918) 623-1424
University Health Physicians
1,483 mi
Internal Medicine
2301 HOLMES ST
Kansas City, MO 64108
  • Reassigned Medicare billing, Missouri enrollment
  • 518 clinicians in this Medicare group
NPI 1669456257 (816) 404-1000

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 94583 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.88/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.46
Promoting Interoperability100
Improvement Activities40
Cost57.71

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 Spenser Perloff's NPI number?

The NPI number for Spenser Perloff is 1861855272. It was assigned to this individual provider in the NPPES registry on April 1, 2016.

Where is Spenser Perloff located?

Spenser Perloff practices at 12677 Alcosta Blvd, San Ramon, CA 94583. The listed phone number is (925) 254-9840.

What is Spenser Perloff's specialty?

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

Is Spenser Perloff enrolled in Medicare?

Yes. Spenser Perloff 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.

Which organizations bill Medicare for Spenser Perloff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Spenser Perloff reassigns Medicare benefits to 3 organizations: John Muir Physician Network (Walnut Creek, CA), Creek Nation Hospital & Clinics (Okemah, OK) and University Health Physicians (Kansas City, MO). 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 Spenser Perloff'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 Spenser Perloff was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.