Physician Profile
Unclaimed ProfileAbout FENSTER
Based in Valhalla, NY, Mitchell Fenster, M.D. is listed in the NPI registry under internal medicine. Mitchell graduated from Icahn School of Medicine at Mount Sinai in 1981.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Fenster's specialty?
Dr. Fenster is an internal medicine in Valhalla, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Fenster?
Dr. Fenster is listed at 401 COLUMBUS AVE, Valhalla, NY 10595. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Fenster?
The number on file is (914) 769-0268. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Fenster?
Dr. Fenster's National Provider Identifier is 1548378573. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Fenster's medical education?
Dr. Fenster attended Icahn School of Medicine at Mount Sinai, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Fenster have?
Dr. Fenster has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Fenster known for?
According to Medicare billing data, Dr. Fenster performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Fenster's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Fenster. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (914) 769-0268
- Email not available
Practice Locations
401 COLUMBUS AVE
Valhalla, NY 10595
Procedures Most Often Billed to Medicare
5,075 services · 2,727 patients · 24 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
801 |
| X-ray of chest, 2 views | Imaging | 71046 |
148 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
309 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
174 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
56 |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
44 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
44 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
37 |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
133 |
| Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 0241U |
41 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other internal medicines in Valhalla 6
Same specialty, same city.
Trained at Icahn School of Medicine at Mount Sinai 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Icahn School of Medicine at Mount Sinai 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NY who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.