Doctor profile · Federal record
Dr. William Karlon, M.D.
Anatomic Pathology & Clinical Pathology Physician (CMS: Hematology) · San Francisco, CA
- NPI 1154365088
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
185 Berry St
San Francisco, CA 941071773
(415) 353-4721
fax (415) 353-4828 - Mailing address
-
1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 941430001
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- June 6, 2008
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207ZP0102X — NUCC code
- State license (1)
- California #A87881
- Medicaid
- CA #00A878810
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154365088. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
723
Distinct HCPCS
5
Medicare allowed
$58,460
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88189 |
Flow cytometry technique for dna or cell analysis, 16 or more markers | 401 | 320 | $94 | |
88188 |
Flow cytometry technique for dna or cell analysis, 9 to 15 markers | 232 | 180 | $70 | |
G0452 |
Molecular pathology procedure; physician interpretation and report | 54 | 48 | $54 | |
88346 |
Antibody evaluation, initial single antibody stain procedure | 18 | 18 | $40 | |
88350 |
Antibody evaluation, each additional single antibody stain procedure | 18 | 18 | $33 |
In context: peer comparison
Among 13 peers in San Francisco Anatomic Pathology & Clinical Pathology Physician, average services per provider: 110. This provider delivers 6.6× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. William Karlon's medical specialty?
Dr. William Karlon practices Anatomic Pathology & Clinical Pathology Physician in San Francisco, CA.
Where does Dr. William Karlon practice?
Dr. William Karlon practices at 185 Berry St, San Francisco, CA 941071773. Office phone: 4153534721.
What is Dr. William Karlon's NPI?
Dr. William Karlon's National Provider Identifier (NPI) is 1154365088, issued by NPPES.
Does Dr. William Karlon accept Medicare assignment?
Yes. Dr. William Karlon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Karlon commonly perform?
Top Medicare-reported procedures in 2023: Flow cytometry technique for dna or cell analysis, 16 or more markers (HCPCS 88189); Flow cytometry technique for dna or cell analysis, 9 to 15 markers (HCPCS 88188); Molecular pathology procedure; physician interpretation and report (HCPCS G0452). Source: CMS Medicare Physician & Other Practitioners file.