Gregory Marelich, MD
NPI 1356429088 · Critical Care Medicine (Internal Medicine) Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Marelich, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Sacramento, CA (NPI 1356429088).
Provider details
- NPI number
- 1356429088
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G69061 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 59 | 27 |
| Tiotropium Bromidebrand: Spiriva Respimat | 45 | 15 |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 35 | 14 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 34 | — |
| Ciclesonidebrand: Alvesco | 27 | — |
| Tiotropium Br/Olodaterol Hclbrand: Stiolto Respimat | 25 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Gregory Marelich's NPI number?
- Gregory Marelich's National Provider Identifier (NPI) is 1356429088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Marelich's specialty?
- Gregory Marelich is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Marelich located?
- Gregory Marelich's practice location on file with NPPES is 6600 Bruceville Rd, Sacramento, CA 95823-4671.
- What is Gregory Marelich's phone number?
- The practice phone number listed in the NPPES registry for Gregory Marelich is (916) 688-2000.
- Does Gregory Marelich accept Medicare?
- Gregory Marelich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Marelich's NPI active?
- Yes — Gregory Marelich's NPI (1356429088) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.