Nathaniel Richard Defelice, M.D.
Critical Care Medicine (Internal Medicine) Physician · Sacramento, CA
Nathaniel Richard Defelice, M.D. is a critical care medicine (internal medicine) physician with a practice address in Sacramento, California, and NPI 1366761496, issued on May 28, 2010. Check the license (California A129005, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Richard Defelice
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- A129005 CA
129005 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1508 Alhambra Blvd Ste 200, Sacramento, CA 95816
- Phone
- (916) 679-3590
- Enumerated
- May 28, 2010
- Record last updated
- Oct 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (916) 482-3647
- Medicare enrollment
- Enrolled (PECOS I20160920001798); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 1508 Alhambra Blvd Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Muhammad Afzal, M.D.Critical Care Medicine (Internal Medicine) Physician1689600553
- Imran Aurangzeb, M.D.Critical Care Medicine (Internal Medicine) Physician1831127570
- Alicia Belden, FNPFamily Nurse Practitioner1609545458
- Richard Defelice, M.D.Critical Care Medicine (Internal Medicine) Physician1063458495
- Kapil Dhawan, M.D.Critical Care Medicine (Internal Medicine) Physician1558385997
- Philip Doyle, PA-CPhysician Assistant1376928309
Verify Nathaniel Richard Defelice in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129005Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Pulmonary Medicine Associates Medical Group Inc.Sacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Richard Defelice among 723 critical care medicine (internal medicine) physician records in California
Nathaniel Richard Defelice, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 2005 among the 559 with a school on file
- Record last updated2020 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Sacramento → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Muhammad Afzal, M.D.Sacramento, CA 958161689600553
- Imran Aurangzeb, M.D.Sacramento, CA 958161831127570
- Richard Defelice, M.D.Sacramento, CA 958161063458495
- Kapil Dhawan, M.D.Sacramento, CA 958161558385997
- Darshan DhinganiSacramento, CA 958161053547968
- Nathaniel Gordon, MDSacramento, CA 958161063731966
- Saman Hayatdavoudi, M.D.Sacramento, CA 958161093912958
- Daniel Ikeda, M.D.Sacramento, CA 958161730124520
Common questions
What is Nathaniel Richard Defelice, M.D.'s NPI number?
Nathaniel Richard Defelice, M.D.'s National Provider Identifier (NPI) is 1366761496, issued on May 28, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Richard Defelice, M.D. located?
The NPPES record lists a practice address at 1508 Alhambra Blvd Ste 200, Sacramento, CA, 95816. Phone: (916) 679-3590. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Richard Defelice, M.D.'s license?
NPPES lists California license number A129005, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.