Daryl J. Spak, MD
Family Medicine Physician · Chula Vista, CA
Daryl J. Spak, MD is a family medicine physician with a practice address in Chula Vista, California, and NPI 1285128025, issued on Jun 15, 2018. Check the license (California A166843, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daryl J. Spak
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- A166843 CA
0101272707 VA
Self-reported in NPPES; status is on the state search - Practice location
- 678 3RD Ave, Chula Vista, CA 91910
- Phone
- (619) 662-4100
- Enumerated
- Jun 15, 2018
- Record last updated
- Jun 7, 2024
- Medicare enrollment
- Enrolled (PECOS I20210924001126); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 678 3RD Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Daryl J. Spak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166843Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
400 Medicare Part D claims for 177 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium43 claims
- Rosuvastatin Calcium20 claims
- Losartan Potassium17 claims
- Trazodone Hcl15 claims
- Amlodipine Besylate14 claims
- Metformin Hcl14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 95.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- 24 ON Physicians OF California PCBrawley, CA
- Centro DE Salud DE LA Comunidad DE San Ysidro, Inc.Chula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daryl J. Spak among 17,133 family medicine physician records in California
Daryl J. Spak, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 family medicine physician records list a practice address in Chula Vista
They are 119 of the 5,329 NPPES records with a practice address in Chula Vista, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Chula Vista → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ovidiu Alb, M.D.Chula Vista, CA 919101356335731
- Susanna Chou, M.D.Chula Vista, CA 919101104889724
- Daisy Damasco-Gutierrez, MDChula Vista, CA 919101700841582
- Reuben Farris, MDChula Vista, CA 919101699749911
- Carol Gilmore, M.D.Chula Vista, CA 919101245264530
- Jerome Glincosky, PACChula Vista, CA 919101275507592
- Paul Hubley, MDChula Vista, CA 919101568496974
- Julie Keeler, DOChula Vista, CA 919101912963109
Common questions
What is Daryl J. Spak, MD's NPI number?
Daryl J. Spak, MD's National Provider Identifier (NPI) is 1285128025, issued on Jun 15, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Daryl J. Spak, MD located?
The NPPES record lists a practice address at 678 3RD Ave, Chula Vista, CA, 91910. Phone: (619) 662-4100. Providers update this record themselves, so call before visiting.
How can I verify Daryl J. Spak, MD's license?
NPPES lists California license number A166843, 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.
How much does Daryl J. Spak, MD prescribe under Medicare Part D?
In 2024, Daryl J. Spak, MD had 400 Medicare Part D claims for 177 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Daryl J. Spak, MD's MIPS final score?
The 2023 MIPS final score is 95.1 of 100. 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.