Gemma Lopez, PA-C
NPI 1932683919 · Pain Medicine (Physical Medicine & Rehabilitation) Physician · San Tan Valley, AZ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gemma Lopez, PA-C is a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider in San Tan Valley, AZ (NPI 1932683919).
Provider details
- NPI number
- 1932683919
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Physical Medicine & Rehabilitation) PhysicianAllopathic & Osteopathic Physicians
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 7208 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
597 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 236 | $101 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 199 | $61 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0481 | 162 | $153 |
Typical Medicare-allowed amounts for these services range $61–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 809 | 114 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 760 | 100 |
| Oxycodone Hcl | 568 | 76 |
| Gabapentin | 350 | 69 |
| Tizanidine Hcl | 341 | 70 |
| Cyclobenzaprine Hcl | 224 | 50 |
| Morphine Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,723 across 67 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
Additional practice locations (1)
- 22321 E Cherrywood DrQueen Creek, AZ 85142-4827Phone: (480) 277-3324
Registry dates
- Enumerated
- 2018-09-17
- Last updated
- 2021-01-28
- Certified
- 2021-01-28
Frequently asked questions
- What is Gemma Lopez's NPI number?
- Gemma Lopez's National Provider Identifier (NPI) is 1932683919, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gemma Lopez's specialty?
- Gemma Lopez is listed in the NPPES registry with a primary specialty of Pain Medicine (Physical Medicine & Rehabilitation) Physician (Allopathic & Osteopathic Physicians).
- Where is Gemma Lopez located?
- Gemma Lopez's practice location on file with NPPES is 36453 N Gantzel Rd Ste 101, San Tan Valley, AZ 85140-7340.
- What is Gemma Lopez's phone number?
- The practice phone number listed in the NPPES registry for Gemma Lopez is (480) 636-1225.
- Does Gemma Lopez accept Medicare?
- Gemma Lopez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gemma Lopez's NPI active?
- Yes — Gemma Lopez's NPI (1932683919) is active in the NPPES registry as of the last update on 2021-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.