Doctor profile · Federal record
Dr. Stephan Mayer, M.D.
Neurocritical Care Physician (CMS: Neurology) · Valhalla, NY
- NPI 1538258538
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
Westchester Medical Center Advanced Physician Services, 100 Woods Road
Valhalla, NY 10595
(914) 493-5098 - Mailing address
-
Westchester Medical Center Advanced Physician Services, 19 Bradhurst Avenue, Suite 3100N
Hawthorne, NY 10532
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- October 30, 2020
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 2084A2900X — NUCC code
- State license (1)
- New York #182231
- Medicaid
- NY #01522861
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538258538. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
361
Distinct HCPCS
3
Medicare allowed
$73,495
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 256 | 100 | $244 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 53 | 24 | $91 | |
99292 |
Critical care, each additional 30 minutes | 52 | 23 | $119 |
In context: peer comparison
Among 1 peers in Valhalla Neurocritical Care Physician, average services per provider: 120. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$9,722
Transactions
14
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 5 | $4,668.93 | |
| Btg International, INC. | 2 | $4,590.74 | |
| Irras USA, INC. | 1 | $167.60 | |
| MicroVention, INC. | 1 | $135.16 | |
| Ucb, INC. | 4 | $119.43 | |
| Csl Behring | 1 | $40.00 |
By nature of payment
Frequently asked questions
What is Dr. Stephan Mayer's medical specialty?
Dr. Stephan Mayer practices Neurocritical Care Physician in Valhalla, NY.
Where does Dr. Stephan Mayer practice?
Dr. Stephan Mayer practices at Westchester Medical Center Advanced Physician Services, Valhalla, NY 10595. Office phone: 9144935098.
What is Dr. Stephan Mayer's NPI?
Dr. Stephan Mayer's National Provider Identifier (NPI) is 1538258538, issued by NPPES.
Does Dr. Stephan Mayer accept Medicare assignment?
Yes. Dr. Stephan Mayer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephan Mayer commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Critical care (HCPCS 99292). Source: CMS Medicare Physician & Other Practitioners file.