Physician Profile
Sebastian Alexander A. Mayer, MD
Unclaimed ProfileAt a glance
- 520 E. 70Th Street, Starr 3, New York, NY 10021
About Dr. Mayer
Sebastian Alexander A. Mayer, MD practices hematopoietic cell transplantation and cellular therapy in New York, NY. Sebastian Alexander is also listed as specializing in hematology and hematology & oncology. Medicare claims data shows Sebastian Alexander provided 724 services to 183 patients. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient'. The provider's National Provider Identifier (NPI) is 1982627873.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (212) 241-6756
- Email not available
Practice Locations
520 E. 70TH STREET STARR 3
New York, NY 10021
Procedures Most Often Billed to Medicare
724 services · 183 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
216 | More often than most peers in Hematopoietic Cell Transplantati… |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
207 | More often than most peers in Hematopoietic Cell Transplantati… |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
170 | As often as other peers in Hematopoietic Cell Transplantati… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
131 | Less often than most peers in Hematopoietic Cell Transplantati… |
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.
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.
Other hematopoietic cell transplantation and cellular therapists in New York 8
Same specialty, same city.
Trained at Other 7
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1998 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Mayer?
Dr. Mayer is a hematopoietic cell transplantation and cellular therapist in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematopoietic Cell Transplantation and Cellular Therapy”.
NPI registry
What is Dr. Mayer's address?
Dr. Mayer is listed at 520 E. 70Th Street Starr 3, New York, NY 10021. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Mayer?
The number on file is (212) 241-6756. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Mayer?
Dr. Mayer's National Provider Identifier is 1982627873. 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
Where did Dr. Mayer train?
Dr. Mayer attended Other, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mayer have?
Dr. Mayer has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Mayer perform?
According to Medicare billing data, Dr. Mayer the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mayer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mayer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.