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- 520 E 70Th St # 341, New York, NY 10021
About Dr. Rybstein
Marissa D. Rybstein, M.D. is a healthcare provider in New York, NY specializing in hematology. Marissa trained at New York Medical College, graduating in 2013. According to Medicare claims data, Marissa cared for 564 Medicare patients across 1,547 services. 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, insertion of needle into vein for collection of blood sample, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1447593132.
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) 746-2061
- Email not available
Practice Locations
520 E 70TH ST # 341
New York, NY 10021
Conditions Commonly Evaluated or Treated
Within Hematology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Anemia
- Blood clots
- Breast cancer
- Colon cancer
- Iron-deficiency anemia
- Leukemia
- Lung cancer
- Lymphoma
- Prostate cancer
Anemia
Bleeding disorders
- Bleeding Disorders
- Frequent Unexplained Nosebleeds
- Heavy Period Bleeding From Bleeding Disorder
- Unexplained Bruising
Blood and immune disorders
Blood cancer
Blood clots
Bone marrow disorders
Clotting disorders
Inherited blood disorders
Iron disorders
Lymph conditions
Lymph disorders
Metabolic blood disorders
Nutritional blood disorders
Organ conditions
Platelet disorders
Protein disorders
Red blood cell disorders
- Cold-Triggered Blood Breakdown
- Hemolytic Anemia in Children
- Nighttime Red Blood Cell Breakdown
- Sickle cell disease
- Thalassemia
- Thick Blood
White blood cell disorders
Procedures & services
Most searched procedures
Biopsy
Blood treatments
- Blood Exchange Transfusion
- Plasmapheresis
- Platelet Removal Procedure
- Therapeutic Blood Draw
- White Blood Cell Removal Procedure
Catheter care
Cell therapy
Cellular therapy
Consultation
Consultations
Diagnostic tests
- Clotting Inhibitor Mixing Study
- Complete Blood Count
- Factor Level Blood Test
- Folic Acid Blood Test
- G6PD Enzyme Test
- Iron Level Blood Test
Infusions
Injections
Lab tests
- Blood Cancer Cell Marker Test
- Blood Clotting Tests
- Blood Smear Examination
- Coomb's Test
- Genetic Blood Clotting Test
- Hemoglobin Electrophoresis
- Myeloma Blood Protein Test
Medication management
Monitoring
Patient education
Procedures
Transfusion therapy
Transplants
Treatments
Procedures Most Often Billed to Medicare
1,547 services · 564 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
343 | More often than most peers in Hematology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
741 | More than most peers in Hematology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
189 | More often than most peers in Hematology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
116 | More often than most peers in Hematology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
50 | Less often than most peers in Hematology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
49 | More often than most peers in Hematology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
28 | More often than most peers in Hematology |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
18 | As often as other peers in Hematology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
13 | More than most peers in Hematology |
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.
Related specialists at this location 7
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.
Other hematology specialists in New York 8
Same specialty, same city.
More connections — 19 related providers in 3 groups
Trained at New York Medical College 6
Other providers in the same specialty who trained at the same institution.
Class of 2013 at New York Medical College 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 5
Providers in NY who bill this service to Medicare most often.
Common questions
What is Marissa D. Rybstein's specialty?
Marissa D. Rybstein is a hematology in New York, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Marissa D. Rybstein?
Marissa D. Rybstein is listed at 520 E 70Th St # 341, New York, NY 10021. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Marissa D. Rybstein?
The number on file is (212) 746-2061. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Marissa D. Rybstein's NPI number?
Marissa D. Rybstein's National Provider Identifier is 1447593132. 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 Marissa D. Rybstein's education?
Marissa D. Rybstein attended New York Medical College, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Marissa D. Rybstein been practicing?
Marissa D. Rybstein has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What is Marissa D. Rybstein known for?
According to Medicare billing data, Marissa D. Rybstein performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Marissa D. Rybstein confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Marissa D. Rybstein. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.