Marc Grossman, M.D.
NPI 1043422306 · Physical Medicine & Rehabilitation Physician · Rockville, MD
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Grossman, M.D. is a Physical Medicine & Rehabilitation Physician provider in Rockville, MD (NPI 1043422306).
Provider details
- NPI number
- 1043422306
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0066318 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,492 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 948 | $132 |
| 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'SG2211 | 831 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 203 | $94 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 164 | $296 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 147 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 103 | 25 |
| Celecoxib | 35 | 13 |
| Methylprednisolone | 29 | 26 |
| Diclofenac Sodium | 25 | 15 |
| Cyclobenzaprine Hcl | 21 | — |
| Oxycodone Hcl | 13 | — |
| Tramadol Hcl | 13 | 11 |
| Meloxicam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$407 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-07
- Last updated
- 2022-05-23
- Certified
- 2022-05-23
Frequently asked questions
- What is Marc Grossman's NPI number?
- Marc Grossman's National Provider Identifier (NPI) is 1043422306, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Grossman's specialty?
- Marc Grossman is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Grossman located?
- Marc Grossman's practice location on file with NPPES is 6000 Executive Blvd Ste 300, Rockville, MD 20852.
- What is Marc Grossman's phone number?
- The practice phone number listed in the NPPES registry for Marc Grossman is (240) 207-2030.
- Does Marc Grossman accept Medicare?
- Marc Grossman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Grossman's NPI active?
- Yes — Marc Grossman's NPI (1043422306) is active in the NPPES registry as of the last update on 2022-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.