Doctor profile · Federal record
Dr. Mitchell Fenster, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Valhalla, NY
- NPI 1548378573
- MIPS 91.6 / 100 · 2023
- 45 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
401 Columbus Ave
Valhalla, NY 105951325
(914) 769-0268
fax (914) 769-6303 - Mailing address
-
190 Goldens Bridge Road
Katonah, NY 10536
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- September 12, 2012
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New York #153600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548378573. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,288
Distinct HCPCS
10
Medicare allowed
$328,692
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 932 | 340 | $148 | |
36415 |
Insertion of needle into vein for collection of blood sample | 842 | 365 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 432 | 247 | $105 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 347 | 289 | $17 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 312 | 33 | $0 | |
71046 |
X-ray of chest, 2 views | 260 | 230 | $41 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 257 | 257 | $150 | |
G0008 |
Administration of influenza virus vaccine | 168 | 168 | $36 | |
90662 |
Influenza vaccine split virus, preservative free | 164 | 164 | $72 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 99 | 76 | $104 |
In context: peer comparison
Among 21 peers in Valhalla Internal Medicine Physician, average services per provider: 104. This provider delivers 41× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,694
Patients
755
Total drug cost
$32,184
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 509 | 140 | $5,737 |
| Amlodipine Besylate | Generic | 403 | 109 | $2,962 |
| Escitalopram Oxalate | Generic | 244 | 63 | $3,217 |
| Rosuvastatin Calcium | Generic | 203 | 59 | $4,242 |
| Lisinopril | Generic | 154 | 43 | $1,556 |
| Zolpidem Tartrate | Generic | 153 | 27 | $1,599 |
| Levothyroxine Sodium | Generic | 143 | 40 | $2,605 |
| Metoprolol Succinate | Generic | 126 | 36 | $2,351 |
| Losartan Potassium | Generic | 122 | 38 | $1,432 |
| Hydrochlorothiazide | Generic | 121 | 38 | $661 |
Hospital affiliations
Frequently asked questions
What is Dr. Mitchell Fenster's medical specialty?
Dr. Mitchell Fenster practices Internal Medicine Physician in Valhalla, NY.
Where does Dr. Mitchell Fenster practice?
Dr. Mitchell Fenster practices at 401 Columbus Ave, Valhalla, NY 105951325. Office phone: 9147690268.
What is Dr. Mitchell Fenster's NPI?
Dr. Mitchell Fenster's National Provider Identifier (NPI) is 1548378573, issued by NPPES.
Does Dr. Mitchell Fenster accept Medicare assignment?
Dr. Mitchell Fenster does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Mitchell Fenster commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.