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DR. NANCY MOSTAFA JOSEPH M.D.
NPI 1669799078
Pathology - Molecular Genetic Pathology in San Francisco, CA

Active since April 24, 2010PECOS EnrolledAccepts Medicare Assignment
74.46/100
CMS Quality Rating
505 PARNASSUS AVE # M-580, UCSF, SAN FRANCISCO, CA 94143(415) 353-7359 Get Directions Write a Review

NPPES record last updated: December 14, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Nancy Mostafa Joseph M.d. NPPES

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

DR. NANCY MOSTAFA JOSEPH M.D. (NPI 1669799078) is an individual molecular genetic pathology provider in San Francisco, California, licensed in California (A121404) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (2010).

NPPES Registry Identity

NPI1669799078
Entity TypeIndividualFemale
Primary Taxonomy207ZP0007X
Provider Legal NameDR. NANCY MOSTAFA JOSEPHCredential: M.D.
Location Address505 PARNASSUS AVE # M-580, UCSFSan Francisco, CA 94143-2204
Mailing Address985 Spring Cove DrSchaumburg, IL 60193-3859 · (734) 330-4474
Phone(415) 353-7359
Sole ProprietorYes
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2010
Enumeration DateApril 24, 2010
Last NPPES UpdateDecember 14, 2017
✔ NPI 1669799078 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Molecular Genetic PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0007X
License✔ Licensed in CA · A121404
Definition
A molecular genetic pathologist is expert in the principles, theory and technologies of molecular biology and molecular genetics. This expertise is used to make or confirm diagnoses of Mendelian genetic disorders, disorders of human development, infectious diseases and malignancies, and to assess the natural history of those disorders. A molecular genetic pathologist provides information about gene structure, function and alteration and applies laboratory techniques for diagnosis, treatment and prognosis for individuals with related disorders.
505 PARNASSUS AVE # M-580, San Francisco, CA 94143
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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. Nancy Mostafa Joseph 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 ID8022249598
PECOS Enrollment IDI20140922000139
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

2

Medicare enrollment records show Nancy Joseph reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
0.1 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
0.1 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

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

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.

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.
339 services136 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
127 services31 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.
63 services57 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.
58 services29 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
43 services21 patients
Pathology examination of tissue using a microscope, moderately low complexity 88304
A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.
26 services19 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.

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.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

Other Providers at the Same Location NPPES

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

GABRIELLE RIZZUTO
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE # M-580
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7359

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 Nancy Joseph's NPI number?

The NPI number for Nancy Joseph is 1669799078. It was assigned to this individual provider in the NPPES registry on April 24, 2010.

Where is Nancy Joseph located?

Nancy Joseph practices at 505 Parnassus Ave # M-580 Ucsf, San Francisco, CA 94143. The listed phone number is (415) 353-7359.

What is Nancy Joseph's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Molecular Genetic Pathology, with taxonomy code 207ZP0007X.

Is Nancy Joseph enrolled in Medicare?

Yes. Nancy Joseph 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 Nancy Joseph's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Joseph reassigns Medicare benefits to 2 organizations: 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 Nancy Joseph'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 Nancy Joseph was last updated on December 14, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.