Donald Null, Jr., MD
NPI 1013096585 · Neonatal-Perinatal Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Null, Jr., MD is a Neonatal-Perinatal Medicine Physician provider in Sacramento, CA (NPI 1013096585).
Provider details
- NPI number
- 1013096585
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 378985-1205 (UT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2015-07-15
Frequently asked questions
- What is Donald Null, Jr.'s NPI number?
- Donald Null, Jr.'s National Provider Identifier (NPI) is 1013096585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Null, Jr.'s specialty?
- Donald Null, Jr. is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Null, Jr. located?
- Donald Null, Jr.'s practice location on file with NPPES is 2315 Stockton Blvd, Sacramento, CA 95817-2201.
- What is Donald Null, Jr.'s phone number?
- The practice phone number listed in the NPPES registry for Donald Null, Jr. is (916) 703-3050.
- Does Donald Null, Jr. accept Medicare?
- Donald Null, Jr. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Null, Jr.'s NPI active?
- Yes — Donald Null, Jr.'s NPI (1013096585) is active in the NPPES registry as of the last update on 2015-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.