Mark Gerard Webb, M.D.
Internal Medicine Physician · Scottsdale, AZ
Mark Gerard Webb, M.D. is an internal medicine physician with a practice address in Scottsdale, Arizona, and NPI 1255396867, issued on Apr 18, 2006. Check the license (Arizona 19868, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Gerard Webb
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 19868 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 10900 N Scottsdale RD, Scottsdale, AZ 85254
- Phone
- (480) 991-5088
- Enumerated
- Apr 18, 2006
- Record last updated
- Jan 23, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (480) 367-1361
- Medicare enrollment
- Enrolled (PECOS I20110228000589); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 10900 N Scottsdale RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Gerard Webb in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 19868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average internal medicine physician in 2024
5,655 Medicare Part D claims for 536 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 98 claims were for opioids.
Most prescribed
- Amlodipine Besylate267 claims
- Atorvastatin Calcium254 claims
- Levothyroxine Sodium193 claims
- Zolpidem Tartrate162 claims
- Lisinopril154 claims
- Rosuvastatin Calcium146 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: $1,455.03
69 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Valley Internal Medicine And Pediatrics, P.C.Scottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Gerard Webb among 2,853 internal medicine physician records in Arizona
Mark Gerard Webb, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1987 · median 2003 among the 1,643 with a school on file
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
344 internal medicine physician records list a practice address in Scottsdale
They are 344 of the 11,008 NPPES records with a practice address in Scottsdale, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Scottsdale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Bierman, M.D.Scottsdale, AZ 852541124023205
- Stephanie Jackson, MDScottsdale, AZ 852541861462509
- Keyvan Koochek, MDScottsdale, AZ 852541902855513
- Mary Ann Lecavalier, MDScottsdale, AZ 852541861497950
- Susan Madsen, M.D.Scottsdale, AZ 852541134216583
- Martin Mollen, MDScottsdale, AZ 852541255384871
- Roxana Orbegoso, M.D.Scottsdale, AZ 852541255326138
- Adrienne Pettit, D.O.Scottsdale, AZ 852541912993445
Common questions
What is Mark Gerard Webb, M.D.'s NPI number?
Mark Gerard Webb, M.D.'s National Provider Identifier (NPI) is 1255396867, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Gerard Webb, M.D. located?
The NPPES record lists a practice address at 10900 N Scottsdale RD, Scottsdale, AZ, 85254. Phone: (480) 991-5088. Providers update this record themselves, so call before visiting.
How can I verify Mark Gerard Webb, M.D.'s license?
NPPES lists Arizona license number 19868, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Gerard Webb, M.D. prescribe under Medicare Part D?
In 2024, Mark Gerard Webb, M.D. had 5,655 Medicare Part D claims for 536 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.