NPPES file of Aug 9, 2026

Mark Francis Towns, M.D.

Addiction Medicine (Internal Medicine) Physician · Galt, CA

Mark Francis Towns, M.D. is an addiction medicine (internal medicine) physician with a practice address in Galt, California, and NPI 1811183643, issued on Sep 14, 2007. Check the license (California A100676, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1811183643
Name
Mark Francis Towns
Credential
M.D.
Primary taxonomy
Addiction Medicine (Internal Medicine) Physician 207RA0401X
License number
A100676 CA
Self-reported in NPPES; status is on the state search
Practice location
750 Spaans Dr, Galt, CA 95632
Phone
(209) 744-9909
Enumerated
Sep 14, 2007
Record last updated
Aug 6, 2025
Fax
(209) 744-9910
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 750 Spaans Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Edith Casillas Rodriguez, SUDRC #20312Addiction (Substance Use Disorder) Counselor1861148066
  2. Shawn Hayes, D.C.Chiropractor1891872495
  3. Stephanie Huihui-Barker, CADC II, ICADCAddiction (Substance Use Disorder) Counselor1669598652
  4. Solaiman JoshanAddiction (Substance Use Disorder) Counselor1114599677
  5. Arthur Keown, D.C.Chiropractor1700831906
  6. Katie Mercado, RADTAddiction (Substance Use Disorder) Counselor1902774771

Verify Mark Francis Towns in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A100676
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average addiction medicine (internal medicine) physician in 2024

25 Medicare Part D claims, against an average of 829 among the 401 providers of this specialty who prescribed in Part D.

  1. Mark Towns25
  2. Specialty average829

Most prescribed

  1. Buprenorphine-Naloxone13 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.

Mark Francis Towns among 73 addiction medicine (internal medicine) physician records in California

Mark Francis Towns, M.D. is one of 73 addiction medicine (internal medicine) physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 49% of them.

  • NPI issued2007 · 49% of these records are older, 38% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2025 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0401X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Addiction Medicine (Internal Medicine) Physician providers in California

There are 73 addiction medicine (internal medicine) physician records in California.

The 8 addiction medicine (internal medicine) physician records with the nearest ZIP codes

  1. Anthony Albanese, M.D.Mather, CA 956551215910187
  2. Everett AllenEureka, CA 955011437615879
  3. Steven Shifflett, MDLakeport, CA 954531558371641
  4. Nazanin Ahmadieh, DOSacramento, CA 958171124524988
  5. Angella Barr, MDSacramento, CA 958251457588964
  6. John Hibbard, M.D.Santa Rosa, CA 954011649361668
  7. Sangeeta Iyer, M.D.Burney, CA 960131730341306
  8. Felipe Bolivar RinconStockton, CA 952101164975330

Common questions

What is Mark Francis Towns, M.D.'s NPI number?

Mark Francis Towns, M.D.'s National Provider Identifier (NPI) is 1811183643, issued on Sep 14, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Francis Towns, M.D. located?

The NPPES record lists a practice address at 750 Spaans Dr, Galt, CA, 95632. Phone: (209) 744-9909. Providers update this record themselves, so call before visiting.

How can I verify Mark Francis Towns, M.D.'s license?

NPPES lists California license number A100676, 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 Mark Francis Towns, M.D. prescribe under Medicare Part D?

In 2024, Mark Francis Towns, M.D. had 25 Medicare Part D claims; the average among addiction medicine (internal medicine) physician prescribers was 829. 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.