Maressa Alejandro Reyes, MD
NPI 1750328969 · Geriatric Medicine (Internal Medicine) Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maressa Alejandro Reyes, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Tucson, AZ (NPI 1750328969).
Provider details
- NPI number
- 1750328969
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 30222 (SC)
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
7,530 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) |
|---|---|---|
| Professional Service for Preparation and Provision of Single-Dose Vial of Allergen95144 | 6,270 | $16 |
| Test for Allergy Using Allergenic Extract95004 | 721 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 260 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 165 | $124 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 40 | $174 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 100 | 52 |
| Amlodipine Besylate | 67 | 33 |
| Levothyroxine Sodium | 60 | 29 |
| Pantoprazole Sodium | 55 | 24 |
| Lisinopril | 54 | 32 |
| Metformin Hcl | 51 | 31 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$297 across 10 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
- 2006-05-31
- Last updated
- 2011-07-06
Frequently asked questions
- What is Maressa Alejandro Reyes's NPI number?
- Maressa Alejandro Reyes's National Provider Identifier (NPI) is 1750328969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maressa Alejandro Reyes's specialty?
- Maressa Alejandro Reyes is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Maressa Alejandro Reyes located?
- Maressa Alejandro Reyes's practice location on file with NPPES is 1702 W. Anklam Road, Tucson, AZ 85745.
- What is Maressa Alejandro Reyes's phone number?
- The practice phone number listed in the NPPES registry for Maressa Alejandro Reyes is (520) 749-3031.
- Does Maressa Alejandro Reyes accept Medicare?
- Maressa Alejandro Reyes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maressa Alejandro Reyes's NPI active?
- Yes — Maressa Alejandro Reyes's NPI (1750328969) is active in the NPPES registry as of the last update on 2011-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.