Richard Guy, M.D.
NPI 1578545190 · Hematology & Oncology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Guy, M.D. is a Hematology & Oncology Physician provider in Sacramento, CA (NPI 1578545190).
Provider details
- NPI number
- 1578545190
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A74887 (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
20 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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 116 | 67 |
| Ondansetron Hcl | 77 | 45 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 60 | 24 |
| Oxycodone Hcl | 51 | 25 |
| Prednisone | 45 | 28 |
| Famotidine | 38 | 29 |
| Tbo-Filgrastimbrand: Granix | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-18
- Last updated
- 2021-12-08
Frequently asked questions
- What is Richard Guy's NPI number?
- Richard Guy's National Provider Identifier (NPI) is 1578545190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Guy's specialty?
- Richard Guy is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Guy located?
- Richard Guy's practice location on file with NPPES is 4501 X St, Sacramento, CA 95817-2229.
- What is Richard Guy's phone number?
- The practice phone number listed in the NPPES registry for Richard Guy is (916) 734-3772.
- Does Richard Guy accept Medicare?
- Richard Guy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Guy's NPI active?
- Yes — Richard Guy's NPI (1578545190) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.