Kimberly Nicole Grelli, MD
Neonatal-Perinatal Medicine Physician · Walnut Creek, CA
Kimberly Nicole Grelli, MD is a neonatal-perinatal medicine physician with a practice address in Walnut Creek, California, and NPI 1255758512, issued on Mar 25, 2014. Check the license (California A147133, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Kimberly Nicole Grelli
- Credential
- MD
- Primary taxonomy
- Neonatal-Perinatal Medicine Physician 2080N0001X
- License number
- A147133 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Ygnacio Valley RD, Walnut Creek, CA 94598
- Phone
- (925) 947-5350
- Enumerated
- Mar 25, 2014
- Record last updated
- Oct 31, 2025
- Fax
- (925) 947-5350
- Entity
- Type 1 · individual
8 nearest neonatal-perinatal medicine physician records → All 871 in California → Look up another NPI →
Also registered at 1601 Ygnacio Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christine Abboud, D.O.Anesthesiology Physician1174901508
- Amy Aiyegbusi, IBCLCLactation Consultant (Registered Nurse)1275204067
- Alina AndradePhysician Assistant1114416773
- Radhika Annadata, MDAnesthesiology Physician1255379624
- Kirkman Beckwith, MDAnesthesiology Physician1073551057
- Stacie Bennett, MDNeonatal-Perinatal Medicine Physician1982660080
Verify Kimberly Nicole Grelli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A147133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Kimberly Nicole Grelli among 871 neonatal-perinatal medicine physician records in California
Kimberly Nicole Grelli, MD is one of 871 neonatal-perinatal medicine physician records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2014, is newer than 82% of them.
- NPI issued2014 · 82% of these records are older, 14% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080N0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neonatal-Perinatal Medicine Physician providers in California
There are 871 neonatal-perinatal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 871 in California → Every provider in Walnut Creek → Neonatal-Perinatal Medicine Physician nationwide →
The 8 neonatal-perinatal medicine physician records with the nearest ZIP codes
- Stacie Bennett, MDWalnut Creek, CA 945981982660080
- Kristin Hubert, MDWalnut Creek, CA 945981154530566
- Imran Khan, MDWalnut Creek, CA 945981013361427
- Genevieve Kinsey, MDWalnut Creek, CA 945981588935118
- Jennifer Levy, MDWalnut Creek, CA 945981619934692
- Kathryn Ponder, MDWalnut Creek, CA 945981649591215
- Sarah Styles, DOWalnut Creek, CA 945981659791499
- David Anderson, MDWalnut Creek, CA 945961063590123
Common questions
What is Kimberly Nicole Grelli, MD's NPI number?
Kimberly Nicole Grelli, MD's National Provider Identifier (NPI) is 1255758512, issued on Mar 25, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Kimberly Nicole Grelli, MD located?
The NPPES record lists a practice address at 1601 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (925) 947-5350. Providers update this record themselves, so call before visiting.
How can I verify Kimberly Nicole Grelli, MD's license?
NPPES lists California license number A147133, 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. 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.