Doctor profile · Federal record
Dr. Marissa Rybstein, M.D.
Hematology (Internal Medicine) Physician (CMS: Hematology/Oncology) · New York, NY
- NPI 1447593132
- Accepts Medicare
- MIPS 84.5 / 100 · 2023
- 13 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
520 E 70Th St # 341
New York, NY 100219800
(212) 746-2061
fax (212) 746-8866
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- September 12, 2022
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207RH0000X — NUCC code
- State license (1)
- New York #283721
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447593132. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,002
Distinct HCPCS
8
Medicare allowed
$138,950
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 429 | 93 | $210 | |
36415 |
Insertion of needle into vein for collection of blood sample | 281 | 85 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 129 | 84 | $147 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 60 | 28 | $167 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 31 | 31 | $258 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 31 | 27 | $92 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 28 | 24 | $139 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 13 | 13 | $202 |
In context: peer comparison
Among 19 peers in this city , average services per provider: 84. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
189
Patients
52
Total drug cost
$270,350
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Hcl | Generic | 32 | 25 | $685 |
| Dexamethasone | Generic | 31 | 12 | $182 |
| Eliquis (Apixaban) | Brand | 27 | 0 | $16,608 |
| Oxycodone Hcl | Generic | 19 | 15 | $500 |
| Xarelto (Rivaroxaban) | Brand | 18 | 0 | $11,012 |
| Alprazolam | Generic | 15 | 0 | $87 |
| Prednisone | Generic | 13 | 0 | $53 |
| Levetiracetam | Generic | 12 | 0 | $48 |
| Mirtazapine | Generic | 11 | 0 | $67 |
| Tagrisso (Osimertinib Mesylate) | Brand | 11 | 0 | $241,109 |
Hospital affiliations
Frequently asked questions
What is Dr. Marissa Rybstein's medical specialty?
Dr. Marissa Rybstein practices Hematology (Internal Medicine) Physician in New York, NY.
Where does Dr. Marissa Rybstein practice?
Dr. Marissa Rybstein practices at 520 E 70Th St # 341, New York, NY 100219800. Office phone: 2127462061.
What is Dr. Marissa Rybstein's NPI?
Dr. Marissa Rybstein's National Provider Identifier (NPI) is 1447593132, issued by NPPES.
Does Dr. Marissa Rybstein accept Medicare assignment?
Yes. Dr. Marissa Rybstein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marissa Rybstein commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.