Catherine Gregg, CRNP
NPI 1043958374 · Nurse Practitioner · Upper St Clair, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Gregg, CRNP is a Nurse Practitioner provider in Upper St Clair, PA (NPI 1043958374).
Provider details
- NPI number
- 1043958374
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- SP020933 (PA)
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
4 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
514 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) |
|---|---|---|
| Removal of Impacted Ear Wax69210 | 373 | $38 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 91 | $73 |
| Exam of Ear Using a Microscope92504 | 20 | $23 |
| Biopsy Or Removal of Nasal Polyp Or Tissue Using an Endoscope31237 | 17 | $294 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 13 | $90 |
Typical Medicare-allowed amounts for these services range $23–$294 (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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 183 | 80 |
| Omeprazole | 97 | 38 |
| Famotidine | 80 | 25 |
| Ipratropium Bromide | 72 | 31 |
| Pantoprazole Sodium | 64 | 17 |
| Ofloxacin | 62 | 50 |
| Mupirocin | 60 | 52 |
| Fluocinolone Acetonide Oil | 57 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,114 across 54 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
- 2022-05-25
- Last updated
- 2022-05-25
- Certified
- 2022-05-25
Frequently asked questions
- What is Catherine Gregg's NPI number?
- Catherine Gregg's National Provider Identifier (NPI) is 1043958374, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Gregg's specialty?
- Catherine Gregg is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Gregg located?
- Catherine Gregg's practice location on file with NPPES is 2589 Washington Rd, Upper St Clair, PA 15241-2566.
- What is Catherine Gregg's phone number?
- The practice phone number listed in the NPPES registry for Catherine Gregg is (412) 595-7681.
- Does Catherine Gregg accept Medicare?
- Catherine Gregg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Gregg's NPI active?
- Yes — Catherine Gregg's NPI (1043958374) is active in the NPPES registry as of the last update on 2022-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.