Mark Webb, M.D.
NPI 1255396867 · Internal Medicine Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Webb, M.D. is a Internal Medicine Physician provider in Scottsdale, AZ (NPI 1255396867).
Provider details
- NPI number
- 1255396867
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 19868 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,719 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 517 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 324 | $124 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 297 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 141 | $125 |
| Urinalysis, Manual Test81002 | 137 | $3 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 123 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 267 | 70 |
| Atorvastatin Calcium | 254 | 73 |
| Levothyroxine Sodium | 193 | 59 |
| Zolpidem Tartrate | 162 | 38 |
| Lisinopril | 154 | 47 |
| Rosuvastatin Calcium | 146 | 40 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,455 across 69 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-18
- Last updated
- 2013-01-23
Frequently asked questions
- What is Mark Webb's NPI number?
- Mark Webb's National Provider Identifier (NPI) is 1255396867, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Webb's specialty?
- Mark Webb is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Webb located?
- Mark Webb's practice location on file with NPPES is 10900 N Scottsdale Rd, Scottsdale, AZ 85254-5216.
- What is Mark Webb's phone number?
- The practice phone number listed in the NPPES registry for Mark Webb is (480) 991-5088.
- Does Mark Webb accept Medicare?
- Mark Webb is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Webb's NPI active?
- Yes — Mark Webb's NPI (1255396867) is active in the NPPES registry as of the last update on 2013-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.