Doctor profile · Federal record
Dr. John Demko, M.D.
Nephrology Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · San Francisco, CA
- NPI 1710419338
- Accepts Medicare
- 9 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
505 Parnassus Ave
San Francisco, CA 941432204
(484) 269-8669 - Mailing address
-
500 Parnassus Ave
San Francisco, CA 941430532
Credentials & registration
- NPI registered
- April 2017 — 9 yrs on file
- Profile last updated
- July 5, 2021
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A161777
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710419338. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
155
Distinct HCPCS
4
Medicare allowed
$19,397
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 85 | 30 | $132 | |
90935 |
Hemodialysis procedure with physician evaluation | 25 | 15 | $79 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 24 | 16 | $88 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 21 | 21 | $193 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 116. This provider delivers 1.3× the peer median.Frequently asked questions
What is Dr. John Demko's medical specialty?
Dr. John Demko practices Nephrology Physician in San Francisco, CA.
Where does Dr. John Demko practice?
Dr. John Demko practices at 505 Parnassus Ave, San Francisco, CA 941432204. Office phone: 4842698669.
What is Dr. John Demko's NPI?
Dr. John Demko's National Provider Identifier (NPI) is 1710419338, issued by NPPES.
Does Dr. John Demko accept Medicare assignment?
Yes. Dr. John Demko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Demko 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); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.