Marek Gruca, M.D.
NPI 1679026561 · Internal Medicine Physician · Christiansburg, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marek Gruca, M.D. is a Internal Medicine Physician provider in Christiansburg, VA (NPI 1679026561).
Provider details
- NPI number
- 1679026561
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101266733 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
790 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 279 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 258 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 145 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 108 | $165 |
Typical Medicare-allowed amounts for these services range $75–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 34 | 34 |
| Cefdinir | 28 | 26 |
| Furosemide | 28 | 27 |
| Pantoprazole Sodium | 24 | 23 |
| Prednisone | 21 | 20 |
| Doxycycline Hyclate | 18 | 16 |
| Oxycodone Hcl | 17 | 17 |
Practice location
Mailing address
Additional practice locations (1)
- 750 E Adams StSyracuse, NY 13210-2306Phone: (315) 464-5240
Registry dates
- Enumerated
- 2016-07-27
- Last updated
- 2019-07-04
Frequently asked questions
- What is Marek Gruca's NPI number?
- Marek Gruca's National Provider Identifier (NPI) is 1679026561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marek Gruca's specialty?
- Marek Gruca is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marek Gruca located?
- Marek Gruca's practice location on file with NPPES is 2900 Lamb Cir, Christiansburg, VA 24073.
- What is Marek Gruca's phone number?
- The practice phone number listed in the NPPES registry for Marek Gruca is (540) 731-2000.
- Does Marek Gruca accept Medicare?
- Marek Gruca is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marek Gruca's NPI active?
- Yes — Marek Gruca's NPI (1679026561) is active in the NPPES registry as of the last update on 2019-07-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.