Doctor profile · Federal record

Dr. Gabriel Loeb, M.D., PH.D.

Nephrology Physician (CMS: Nephrology) · Internal Medicine Physician · San Francisco, CA

  • NPI 1649651647
  • Accepts Medicare
  • MIPS 70.8 / 100 · 2023
  • 11 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
400 Parnassus Ave # B1
San Francisco, CA 941432202
(415) 476-1812

Credentials & registration

NPPES · NUCC
NPI registered
June 2015 — 11 yrs on file
Profile last updated
August 4, 2023
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
207RN0300X — NUCC code
State licenses (2)
California #A154997 · Massachusetts #264267

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1649651647. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
130
Distinct HCPCS
3
Medicare allowed
$16,390
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 74 35 $134
90935 Hemodialysis procedure with physician evaluation 39 22 $80
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 17 17 $196

In context: peer comparison

Among 20 peers in this city , average services per provider: 116. This provider delivers 1.1× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Gabriel Loeb's medical specialty?
Dr. Gabriel Loeb practices Nephrology Physician in San Francisco, CA.
Where does Dr. Gabriel Loeb practice?
Dr. Gabriel Loeb practices at 400 Parnassus Ave # B1, San Francisco, CA 941432202. Office phone: 4154761812.
What is Dr. Gabriel Loeb's NPI?
Dr. Gabriel Loeb's National Provider Identifier (NPI) is 1649651647, issued by NPPES.
Does Dr. Gabriel Loeb accept Medicare assignment?
Yes. Dr. Gabriel Loeb accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gabriel Loeb commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hemodialysis procedure with physician evaluation (HCPCS 90935); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.