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MOHAMMED SAADAD HUSSAIN
NPI 1841933140
Internal Medicine in San Francisco, CA

Active since April 15, 2022PECOS EnrolledAccepts Medicare Assignment
1001 POTRERO AVE, SAN FRANCISCO, CA 94110(347) 398-7680 Get Directions Write a Review

NPPES record last updated: December 12, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Dec 12, 2025, Apr 15, 2022 (2 updates tracked since 2022).

About Mohammed Saadad Hussain NPPES

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

MOHAMMED SAADAD HUSSAIN (NPI 1841933140) is an individual internal medicine provider in San Francisco, California, licensed in California (203748) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS and is a graduate of City University Of New York School Of Medicine (2022).

NPPES Registry Identity

NPI1841933140
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMOHAMMED SAADAD HUSSAIN
Location Address1001 POTRERO AVESan Francisco, CA 94110-3518
Mailing AddressPo Box 743749Los Angeles, CA 90074-3749 · (415) 514-3000
Phone(347) 398-7680
Sole ProprietorYes
Medical School CMSCity University Of New York School Of MedicineGraduated 2022
Enumeration DateApril 15, 2022
Last NPPES UpdateDecember 12, 20252 updates tracked since enumeration
NPPES CertifiedDecember 12, 2025
✔ NPI 1841933140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 203748
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License A203748 (CA)
1001 POTRERO AVE, San Francisco, CA 94110
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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

Mohammed Saadad Hussain 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 ID4385148139
PECOS Enrollment IDI20250916002992
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 Mohammed Hussain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

City & County Of San Francisco
Same address
General Acute Care Hospital
1001 POTRERO AVE, BUILDING 5, WARD 1B
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 1,573 clinicians in this Medicare group
NPI 1083648810 (415) 759-4067
University Of California Sfgh Medical Group
Same address
Hospice and Palliative Medicine
1001 POTRERO AVE, RM. 5H22
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 637 clinicians in this Medicare group
NPI 1073836060 (415) 206-8317

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 94110 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.

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.

ROCIO C AGRAZ-LARA RN, PHN
Registered Nurse
1001 POTRERO AVE, ZSFG BUILDING 90 4TH FLOOR
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-8524
DR. SUSAN WLODARCZYK MD
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE, BLDG 10, 3RD FLOOR, WARD 13 BOX 1364
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5164
AMY DINER PSY.D.
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5270
CHRISTOPHER RUIZ
Case Manager/Care Coordinator
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3950
C. STIRLING SOMERS
Counselor
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5270
WILLIAM RUSSEL CARPENTER FNP-C
Nurse Practitioner (Family)
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (628) 206-8000
REGENTS OF THE UNIVERSITY OF CALIFORNIA
Clinical Medical Laboratory
1001 POTRERO AVE, BLDG 100, RM 104
SAN FRANCISCO, CA 94110
San Francisco County (415) 502-4775
DR. DENISE RENEE GONZALEZ MD
Internal Medicine
1001 POTRERO AVE, 1M
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-6075

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 Mohammed Hussain's NPI number?

The NPI number for Mohammed Hussain is 1841933140. It was assigned to this individual provider in the NPPES registry on April 15, 2022.

Where is Mohammed Hussain located?

Mohammed Hussain practices at 1001 Potrero Ave, San Francisco, CA 94110. The listed phone number is (347) 398-7680.

What is Mohammed Hussain's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mohammed Hussain enrolled in Medicare?

Yes. Mohammed Hussain 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 Mohammed Hussain's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mohammed Hussain reassigns Medicare benefits to 2 organizations: City & County Of San Francisco (San Francisco, CA) and University Of California Sfgh Medical Group (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 Mohammed Hussain'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 Mohammed Hussain was last updated on December 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.