Mark Davidson, M.D.
Internal Medicine Physician · Webster, MA
Mark Davidson, M.D. is an internal medicine physician with a practice address in Webster, Massachusetts, and NPI 1417948522, issued on Oct 31, 2005. Check the license (Massachusetts 218842, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Davidson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 218842 MA
Self-reported in NPPES; status is on the state search - Practice location
- 340 Thompson RD, Webster, MA 01570
- Phone
- (508) 943-0821
- Enumerated
- Oct 31, 2005
- Entity
- Type 1 · individual
Also registered at 340 Thompson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Davidson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 218842Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
8% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,557 Medicare Part D claims for 196 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. 46 claims were for opioids.
Most prescribed
- Atorvastatin Calcium208 claims
- Lisinopril204 claims
- Simvastatin177 claims
- Amlodipine Besylate140 claims
- Levothyroxine Sodium78 claims
- Omeprazole74 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: $54.53
2 payments, mostly food and beverage; the largest payer was Pfizer Inc.. The 65,274 providers of this specialty with any payment received $2,536.66 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.
One hospital or facility affiliation
- Umass Memorial Medical Group IncNorthborough, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
12 internal medicine physician records list a Webster practice address
They are 12 of the 190 NPPES records with a Webster practice address, and 7,865 internal medicine physician records in Massachusetts.
All 12 in Webster → All 7,865 in Massachusetts → Every provider in Webster →
Other internal medicine physician records in Massachusetts
- Nawal Aamir, MDWorcester, MA1588248926
- Zainab AbbasWorcester, MA1609028000
- Nooshin Abbasi, MD MPHNewton, MA1831888353
- Lauren Abbate, MDBoston, MA1922099621
- Bassima Abdallah, MDBoston, MA1912327305
- Samah Abdallah, MDBrighton, MA1730814971
- Omar Abdel-Wahab, M.D.Boston, MA1023042777
- Salah Abdelgadir, MDBoston, MA1891280954
- Mahmoud Abdelghany, M.D.Springfield, MA1134479629
- Mohab AbdelhalimBoston, MA1871388496
Common questions
What is Mark Davidson, M.D.'s NPI number?
Mark Davidson, M.D.'s National Provider Identifier (NPI) is 1417948522, issued on Oct 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Davidson, M.D. located?
The NPPES record lists a practice address at 340 Thompson RD, Webster, MA, 01570. Phone: (508) 943-0821. Providers update this record themselves, so call before visiting.
How can I verify Mark Davidson, M.D.'s license?
NPPES lists Massachusetts license number 218842, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Davidson, M.D. prescribe under Medicare Part D?
In 2024, Mark Davidson, M.D. had 2,557 Medicare Part D claims for 196 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.