Mark Simmons, MD
NPI 1811092760 · Internal Medicine Physician · Tuscon, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Simmons, MD is a Internal Medicine Physician provider in Tuscon, AZ (NPI 1811092760).
Provider details
- NPI number
- 1811092760
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 37923 (CO)
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
19 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
424 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 | 164 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 105 | $104 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 69 | $52 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 57 | $107 |
| Automated Urinalysis Test81003 | 16 | $2 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 451 | 140 |
| Lisinopril | 236 | 76 |
| Amlodipine Besylate | 220 | 70 |
| Levothyroxine Sodium | 175 | 54 |
| Meloxicam | 124 | 44 |
| Metformin Hcl | 121 | 39 |
| Simvastatin | 106 | 34 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (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
- 2006-09-14
- Last updated
- 2024-09-26
Frequently asked questions
- What is Mark Simmons's NPI number?
- Mark Simmons's National Provider Identifier (NPI) is 1811092760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Simmons's specialty?
- Mark Simmons is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Simmons located?
- Mark Simmons's practice location on file with NPPES is 3870 W. River Rd, Tuscon, AZ 85741.
- What is Mark Simmons's phone number?
- The practice phone number listed in the NPPES registry for Mark Simmons is (520) 219-6616.
- Does Mark Simmons accept Medicare?
- Mark Simmons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Simmons's NPI active?
- Yes — Mark Simmons's NPI (1811092760) is active in the NPPES registry as of the last update on 2024-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.