DR. STEVEN R LONG M.D.
NPI 1194737908
Pathology - Anatomic Pathology in San Francisco, CA
About Dr. Steven R Long M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN R LONG M.D. (NPI 1194737908) is an individual anatomic pathology provider in San Francisco, California, licensed in California (G79234) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. Steven R Long 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.
Medicare Billing Reassignments
4Medicare enrollment records show Steven Long reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 38 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.
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.
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 Steven Long's NPI number?
The NPI number for Steven Long is 1194737908. It was assigned to this individual provider in the NPPES registry on August 12, 2006.
Where is Steven Long located?
Steven Long practices at 1825 4th St Rm L2181a, San Francisco, CA 94143. The listed phone number is (415) 353-4554.
What is Steven Long's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Steven Long enrolled in Medicare?
Yes. Steven Long 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 Steven Long's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Long reassigns Medicare benefits to 4 organizations: University Of California Sfgh Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Diagnostic Pathology Medical Group Inc (Vallejo, 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 Steven Long'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 Steven Long was last updated on December 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Steven R Long, M.D. · NPI 1194737908
Anatomic Pathology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since August 12, 2006.
## Identity
- **NPI:** 1194737908 (Entity type: Individual)
- **Enumerated:** August 12, 2006
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** G79234 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1825 4TH ST RM L2181A, San Francisco, CA 94143-2350
- **Phone:** (415) 353-4554 · **Fax:** (415) 353-7676
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Diagnostic Pathology Medical Group Inc (NPI 1992199160, Vallejo, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** December 11, 2020
- **Other identifiers:** Medicaid 00G79234 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1194737908) · Data from the CMS NPPES public registry.