Benjamin Longwell, D.O.
Anesthesiology Physician · Walnut Creek, CA
Benjamin Longwell, D.O. is an anesthesiology physician with a practice address in Walnut Creek, California, and NPI 1548623671, issued on Apr 5, 2016. Check the license (California 20A18376, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin Longwell
- Credential
- D.O.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 20A18376 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Ygnacio Valley RD, Walnut Creek, CA 94598
- Phone
- (925) 543-0140
- Enumerated
- Apr 5, 2016
- Record last updated
- Oct 7, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (877) 303-1460
- Medicare enrollment
- Enrolled (PECOS I20201130001398); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2016
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 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 Benjamin Longwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 61.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America - Anesthesia PCWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Longwell among 7,571 anesthesiology physician records in California
Benjamin Longwell, D.O. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2016 · median 2006 among the 4,868 with a school on file
- Record last updated2020 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
100 anesthesiology physician records list a practice address in Walnut Creek
They are 100 of the 6,170 NPPES records with a practice address in Walnut Creek, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Walnut Creek → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Radhika Annadata, MDWalnut Creek, CA 945981255379624
- Kirkman Beckwith, MDWalnut Creek, CA 945981073551057
- Sarah Cameron, MDWalnut Creek, CA 945981689617243
- Cooper Chao, MDWalnut Creek, CA 945981609818608
- Michele Collier, MDWalnut Creek, CA 945981871537324
- Kurt Dittmar, MDWalnut Creek, CA 945981003858697
- Samir Dzankic, MDWalnut Creek, CA 945981174565741
- Ray Engstrom, MDWalnut Creek, CA 945981669414207
Common questions
What is Benjamin Longwell, D.O.'s NPI number?
Benjamin Longwell, D.O.'s National Provider Identifier (NPI) is 1548623671, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Longwell, D.O. located?
The NPPES record lists a practice address at 1601 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (925) 543-0140. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Longwell, D.O.'s license?
NPPES lists California license number 20A18376, 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.
What is Benjamin Longwell, D.O.'s MIPS final score?
The 2023 MIPS final score is 61.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.