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Dr. Daryl J. Spak, MD
NPI1285128025PAC ID4789081308
- Medicare services, 2024
- 14
- Medicare patients, 2024
- 25
- Part D claims, 2024
- 400
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 1601 Precision Park Ln, San Ysidro, CA 92173
- Practice phone
- Call (619) 662-4100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Ysidro Health Chula Vista
San Ysidro, California
Find Dr. Spak's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Daryl J. Spak is a family medicine physician in San Ysidro, California
Dr. Spak practices at San Ysidro Health Chula Vista in San Ysidro, California.
Dr. Spak's NPI, 1285128025, was assigned on June 15, 2018. Dr. Spak graduated from Jacobs School of Medicine and Biomedical Sciences in 2018. Dr. Spak's California license number on file is A166843.
NPI and contact details
- NPI
- 1285128025NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789081308
- NPI enumeration date
- June 15, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (619) 662-4100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daryl J. Spak practices at San Ysidro Health Chula Vista in San Ysidro, California
Dr. Spak's primary practice is San Ysidro Health Chula Vista, at 1601 Precision Park Ln, San Ysidro, CA 92173 in San Diego County. The practice phone is (619) 662-4100.
- San Ysidro Health Chula Vista1601 Precision Park Ln, San Ysidro, CA 92173 · San Diego CountyPhone(619) 662-4100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daryl J. Spak is affiliated with 2 sites of care and 2 medical groups
Dr. Spak's primary practice is San Ysidro Health Chula Vista in San Ysidro, California. Dr. Spak is also affiliated with Pioneers Memorial Hospital. The medical group on file is San Ysidro Health. Dmand AI also links Dr. Spak to 1 more medical group, named with a free account.
San Ysidro Health Chula VistaPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daryl J. Spak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Spak practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Ysidro Health Chula Vista | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daryl J. Spak is one of 15,680 family medicine physicians in California
Family medicine is Dr. Spak's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Spak is board certified in hiv specialist ™ (aahivs) by the American Academy of HIV Medicine. Dmand AI has Dr. Spak's licenses on file in 2 states: California and Virginia.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
- Virginia license
Clinical focus
Dmand AI lists acid reflux, acute sinusitis, acute skin infection, adjustment disease, alzheimer's disease, anemia, aneurysm and anxiety among the conditions Dr. Spak treats.
Family medicine physicians near Dr. Spak
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daryl J. Spak billed Medicare for 14 services in 2024
CMS data shows 14 Medicare services from Dr. Spak across 1 procedure code in 2024, for 25 Medicare patients. Medicare paid $121 for them. Every service was in an office.
Medicare services, 202414
Medicare patients25
Paid by Medicare$121
Procedure codes1
Dr. Spak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 02024: 14
- Other services
- 2023: 812024: 0100%
- Office and hospital visits
- 2023: 3442024: 0100%
Dr. Spak compared with the California median for family medicine physicians, 2024
- Dr. Spak
- California median
- Medicare services
- 14vs 24694% below
- Medicare patients
- 25vs 11879% below
- Part D claims
- 159vs 83381% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Spak's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Spak?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Spak and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daryl J. Spak treated 25 Medicare patients in 2024, average age 73
CMS counts 25 Medicare patients who saw Dr. Spak in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.91, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Spak's median patient age at 51, with 56% women.
Medicare patients, 202425
Average age73
Average risk score2.91
Dr. Spak's Medicare patients by sex, 2024
- Women1352%
- Men1248%
Chronic conditions among Dr. Spak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes56%
- Chronic kidney disease44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Spak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daryl J. Spak wrote 400 Medicare Part D claims in 2024
In 2024, Dr. Spak wrote 400 Medicare Part D claims for 177 patients. 86% of them were for generic drugs. CMS names the drug for 159 of them, across 9 drugs with 11 or more claims each, at $2,346 in total drug cost. In 2023, CMS named 5,238 claims across 96 drugs.
Part D claims, 2024400
Drugs named by CMS9
Total drug cost$2,346
Part D patients177
Dr. Spak's Part D claims by kind of drug, 2024
- Generic345 claims86%
- Brand-name and other55 claims14%
Dr. Spak's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,2382024: 15997%
Drugs named by CMS: 9 in 2024, 96 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Daryl J. Spak takes part in Medicare
Dr. Spak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Daryl J. Spak has 1 publication on record
Dmand AI links 1 paper to Dr. Spak in 2017.
Papers1
Recent publications by Dr. Spak
See who Dr. Spak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Spak works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Daryl J. Spak received $219 in industry payments in 2025
CMS Open Payments shows 2 general payments to Dr. Spak from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $145.
Companies that paid Dr. Spak the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daryl J. Spak graduated from Jacobs School of Medicine and Biomedical Sciences
Dr. Spak graduated from Jacobs School of Medicine and Biomedical Sciences in 2018.
- Medical school
- Board certified in hiv specialist ™ (aahivs)
- Board certified in family medicine
- Board certified in ctropmed ®
Source: Dmand AI Professional Profile Data
Dr. Daryl J. Spak accepts plans from 15 insurance carriers
Dr. Spak is in network with 15 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Molina
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Spak accepts, by number of carriers
- PPO9
- Medicare8
- HMO7
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Daryl J. Spak's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Daryl J. Spak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Daryl J. Spak's NPI number?
Dr. Daryl J. Spak's NPI number is 1285128025. It was assigned on June 15, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Daryl J. Spak?
Dr. Daryl J. Spak is a family medicine physician in San Ysidro, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Daryl J. Spak practice?
Dr. Spak practices at 1601 Precision Park Ln, San Ysidro, CA 92173. Dr. Spak's primary practice is San Ysidro Health Chula Vista in San Ysidro, California. Dmand AI also links Dr. Spak to 1 medical group.
What is Dr. Daryl J. Spak's office phone number?
The practice phone on file for Dr. Spak is (619) 662-4100.
What is Dr. Daryl J. Spak's medical license number?
Dr. Spak's California license number on file is A166843, one of the licenses on file in 2 states.
Which states has Dr. Daryl J. Spak been licensed in?
Dmand AI has state licenses on file for Dr. Spak in California (2019 to 2025) and Virginia (2021 to 2024).
Which hospitals is Dr. Daryl J. Spak affiliated with?
Dr. Spak is affiliated with Pioneers Memorial Hospital.
What medical group is Dr. Daryl J. Spak part of?
Dr. Spak is linked to San Ysidro Health. Dmand AI links Dr. Spak to 1 more medical group.
Does Dr. Daryl J. Spak accept Medicare?
Yes. CMS data shows Dr. Spak billed Medicare for 14 services in 2024, and Dr. Spak accepts Medicare assignment.
How many Medicare patients does Dr. Daryl J. Spak see?
CMS counts 25 Medicare patients who saw Dr. Spak in 2024, with an average age of 73.
Show 8 more questionsShow fewer questions
Is Dr. Daryl J. Spak board certified?
Yes. Dr. Spak is board certified in hiv specialist ™ (aahivs) by the American Academy of HIV Medicine.
What services does Dr. Daryl J. Spak bill to Medicare?
In 2024, Dr. Spak's most billed Medicare services were surgery: heart and blood vessels (36415).
Where did Dr. Daryl J. Spak go to medical school?
Dr. Spak graduated from Jacobs School of Medicine and Biomedical Sciences in 2018.
What drugs does Dr. Daryl J. Spak prescribe most?
In 2024 Medicare Part D data, Dr. Spak's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Losartan Potassium.
Has Dr. Daryl J. Spak received payments from drug or device companies?
CMS Open Payments shows $219 in general payments to Dr. Spak from 2 companies from 2025 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Daryl J. Spak been practicing?
Dr. Spak graduated from medical school in 2018, 8 years ago.
Does Dr. Daryl J. Spak do research?
Dmand AI links 1 publication to Dr. Spak.
What insurance does Dr. Daryl J. Spak accept?
Dr. Spak is in network with 15 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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