Doctor profile · Federal record

Dr. Mark Looney, MD

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

  • NPI 1386692721
  • Accepts Medicare
  • 28 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
513 Parnassus Ave
San Francisco, CA 941432205
(415) 353-1116
fax (415) 353-1990
Mailing address
1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 941430001

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
July 30, 2008
Year of graduation
1998 — 28 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A69928
Medicaid
CA #00A699280

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1386692721. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
176
Distinct HCPCS
5
Medicare allowed
$33,392
HCPCS Description Services Patients Avg allowed
99291 Critical care, first 30-74 minutes 97 49 $237
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 27 18 $89
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 20 17 $135
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 19 19 $146
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 13 13 $196

In context: peer comparison

Among 236 peers in this city , average services per provider: 93. This provider delivers 1.9× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Looney's medical specialty?
Dr. Mark Looney practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Mark Looney practice?
Dr. Mark Looney practices at 513 Parnassus Ave, San Francisco, CA 941432205. Office phone: 4153531116.
What is Dr. Mark Looney's NPI?
Dr. Mark Looney's National Provider Identifier (NPI) is 1386692721, issued by NPPES.
Does Dr. Mark Looney accept Medicare assignment?
Yes. Dr. Mark Looney accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Looney commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.