Theresa Gillis, PA-C
NPI 1306024476 · Physician Assistant · Frederick, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Gillis, PA-C is a Physician Assistant provider in Frederick, MD (NPI 1306024476).
Provider details
- NPI number
- 1306024476
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- C0003401 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
16 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,799 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) |
|---|---|---|
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 497 | $11 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 450 | $108 |
| Automated Urinalysis Test81003 | 328 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 229 | $77 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 104 | $140 |
| Instillation of Anti-Cancer Drug Into Bladder51720 | 59 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 327 | 140 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 116 | 45 |
| Finasteride | 88 | 42 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 48 | 37 |
| Methenamine Hippurate | 46 | 20 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 44 | 22 |
| Mirabegronbrand: Myrbetriq |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$327 across 13 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 (15)
- 1194 Dutchmans Creek DrBrunswick, MD 21716-9786Phone: (240) 215-6310
- 16403 Old Emmitsburg RdEmmitsburg, MD 21727-8929Phone: (240) 215-6310
- 194 Thomas Johnson DrFrederick, MD 21702-4679Phone: (240) 215-6310
- 230 W Patrick StFrederick, MD 21701-6945Phone: (240) 215-6310
- 7211 Bank CtFrederick, MD 21703-8483Phone: (240) 215-6310
- 501 W 7th StFrederick, MD 21701-4586Phone: (240) 215-6310
- 1562 Opossumtown PikeFrederick, MD 21702-4920Phone: (240) 215-6310
- 400 W 7th StFrederick, MD 21701-4506Phone: (240) 215-6310
- 1 Frederick Health WayFrederick, MD 21701-9435Phone: (240) 215-6310
Registry dates
- Enumerated
- 2008-01-31
- Last updated
- 2023-05-16
- Certified
- 2023-05-16
Frequently asked questions
- What is Theresa Gillis's NPI number?
- Theresa Gillis's National Provider Identifier (NPI) is 1306024476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Gillis's specialty?
- Theresa Gillis is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Gillis located?
- Theresa Gillis's practice location on file with NPPES is 68 Thomas Johnson Dr, Frederick, MD 21702-4300.
- What is Theresa Gillis's phone number?
- The practice phone number listed in the NPPES registry for Theresa Gillis is (301) 694-5292.
- Does Theresa Gillis accept Medicare?
- Theresa Gillis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Gillis's NPI active?
- Yes — Theresa Gillis's NPI (1306024476) is active in the NPPES registry as of the last update on 2023-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.