Doctor profile · Federal record
Dr. Diana Sylvestre, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Addiction Medicine (Psychiatry & Neurology) Physician · Oakland, CA
- NPI 1487668422
- Accepts Medicare
- 38 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
520 27Th St
Oakland, CA 946121706
(510) 834-5442
fax (510) 834-0916
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- September 13, 2013
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G81856
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487668422. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
163
Distinct HCPCS
2
Medicare allowed
$26,023
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 136 | 17 | $150 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 27 | 13 | $209 |
In context: peer comparison
Among 78 peers in Oakland Internal Medicine Physician, average services per provider: 326. This provider delivers 0.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
213
Patients
0
Total drug cost
$64,586
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 25 | 0 | $423 |
| Atorvastatin Calcium | Generic | 17 | 0 | $407 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 15 | 0 | $295 |
| Spiriva Respimat (Tiotropium Bromide) | Brand | 15 | 0 | $8,029 |
| Famotidine | Generic | 14 | 0 | $239 |
| Spironolactone | Generic | 14 | 0 | $333 |
| Sucralfate | Generic | 14 | 0 | $1,010 |
| Combivent Respimat (Ipratropium/Albuterol Sulfate) | Brand | 13 | 0 | $6,168 |
| Oxycodone Hcl | Generic | 13 | 0 | $180 |
| Xarelto (Rivaroxaban) | Brand | 13 | 0 | $8,150 |
Frequently asked questions
What is Dr. Diana Sylvestre's medical specialty?
Dr. Diana Sylvestre practices Internal Medicine Physician in Oakland, CA.
Where does Dr. Diana Sylvestre practice?
Dr. Diana Sylvestre practices at 520 27Th St, Oakland, CA 946121706. Office phone: 5108345442.
What is Dr. Diana Sylvestre's NPI?
Dr. Diana Sylvestre's National Provider Identifier (NPI) is 1487668422, issued by NPPES.
Does Dr. Diana Sylvestre accept Medicare assignment?
Yes. Dr. Diana Sylvestre accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Sylvestre commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.