Dr. Marissa Rybstein, MD
520 E 70th St # 341, New York, NY 10021 • +1-926-555-4635
Medical Education: Accredited U.S. Medical School (Class of 2002)
What This Doctor Actually Performs: CMS Medicare Utilization & New York Percentiles
NPI #1447593132 • CBSA 35620 • Hematology-Oncology
CMS Medicare Part B utilization records credit Dr. Marissa Rybstein (MD, NPI 1447593132) at 520 E 70th St # 341 in New York with 1,606 annual clinical services (327 beneficiaries), corresponding to a -0.58σ regional deviation and mid-cohort balanced caseload (63.64th New York percentile) with sub-specialty concentration in 20 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 520 E 70th St # 341 shows Dr. Marissa Rybstein's primary concentration in Moderate-to-High Complexity Internal Medicine Follow-Up (code 99214: 723x/yr, 63.64th local percentile) alongside Established Preventive & Chronic Care Visit (99213: 418x/yr, $191–$261).
For out-of-network patients contacting +1-926-555-4635, Dr. Rybstein's practice posts a $239.00 GPCI self-pay consult estimate ($239.00 patient-logged median, 4.93/5 composite reality score over 4 submissions).
Credentialed as an MD specialist with 24 years post-graduation experience since completing medical school at an LCME/COCA institution (2002), Dr. Rybstein coordinates 20 Active CMS HCPCS Codes workups from 520 E 70th St # 341 (+1-926-555-4635).
Compared against New York, NY Hematology-Oncology peers
1,606 annual services across 327 beneficiaries
Standard deviations from NY Hematology-Oncology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Moderate-to-High Complexity Internal Medicine Follow-Up | 723 | 63.64th | $249 – $341 |
| 99213 | Established Preventive & Chronic Care Visit | 418 | 68.64th | $191 – $261 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 209 | 61.64th | $91 – $125 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 161 | 68.64th | $292 – $401 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 96 | 66.64th | $346 – $475 |
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Dr. Marissa Rybstein, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Rybstein National Provider Identifier | NPI #1447593132 (MD) | CMS NPPES Registry (10021) |
| Dr. Rybstein New York CMS Volume Rank | 63.64th Pct (1,606 CMS svcs; Z -0.577σ) | CMS Medicare Part B (NY Hematology-Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (New York, NY) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 16 min lobby wait | 4 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.82/5 Listening • 4.65/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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