David Mach, D.O.
Family Medicine Physician · Roseville, CA
David Mach, D.O. is a family medicine physician with a practice address in Roseville, California, and NPI 1821070202, issued on Nov 18, 2005. Check the license (California 20A7898, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Mach
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A7898 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2261 Douglas Blvd, Roseville, CA 95661
- Phone
- (916) 783-7193
- Enumerated
- Nov 18, 2005
- Record last updated
- Nov 30, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (916) 783-0801
- Medicare enrollment
- Enrolled (PECOS I20050404000488); accepts Medicare assignment
- Medical or professional school
- Ohio University, College Of Osteopathic Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2261 Douglas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Mach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average family medicine physician in 2024
5,999 Medicare Part D claims for 659 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 229 claims were for opioids.
Most prescribed
- Atorvastatin Calcium375 claims
- Levothyroxine Sodium260 claims
- Lisinopril229 claims
- Amlodipine Besylate188 claims
- Losartan Potassium150 claims
- Gabapentin149 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.
Industry payments in 2024: $132.08
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Mach among 17,133 family medicine physician records in California
David Mach, D.O. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1998 · median 2005 among the 10,652 with a school on file
- Record last updated2007 · 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).
136 family medicine physician records list a practice address in Roseville
They are 136 of the 5,340 NPPES records with a practice address in Roseville, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Roseville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Roger Ang, M.D.Roseville, CA 956611144251497
- Dutima Batra, M.D.Roseville, CA 956611407890288
- Christoph Beisenherz, M.D.Roseville, CA 956611013999101
- Anne Braunstein, M.D.Roseville, CA 956611316902000
- Yolanda Cheng, M.D.Roseville, CA 956611629093166
- Afshine Ghaemi, M.D.Roseville, CA 956611720080815
- William Jornlin, MDRoseville, CA 956611235112160
- Youssry Kelada, M.D.Roseville, CA 956611316919442
Common questions
What is David Mach, D.O.'s NPI number?
David Mach, D.O.'s National Provider Identifier (NPI) is 1821070202, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Mach, D.O. located?
The NPPES record lists a practice address at 2261 Douglas Blvd, Roseville, CA, 95661. Phone: (916) 783-7193. Providers update this record themselves, so call before visiting.
How can I verify David Mach, D.O.'s license?
NPPES lists California license number 20A7898, 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 David Mach, D.O. prescribe under Medicare Part D?
In 2024, David Mach, D.O. had 5,999 Medicare Part D claims for 659 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.