Johannah Gregg, FNP-C
NPI 1790456895 · Family Nurse Practitioner · Mill City, OR
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johannah Gregg, FNP-C is a Family Nurse Practitioner provider in Mill City, OR (NPI 1790456895).
Provider details
- NPI number
- 1790456895
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- NA (OR)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
14 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 14 | $6 |
Typical Medicare-allowed amounts for these services range $6–$6 (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 · 106 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 247 | 67 |
| Losartan Potassium | 200 | 49 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 148 | 36 |
| Levothyroxine Sodium | 145 | 31 |
| Lisinopril | 144 | 36 |
| Amlodipine Besylate | 143 | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-09-28
- Last updated
- 2021-10-26
- Certified
- 2021-10-26
Frequently asked questions
- What is Johannah Gregg's NPI number?
- Johannah Gregg's National Provider Identifier (NPI) is 1790456895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johannah Gregg's specialty?
- Johannah Gregg is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Johannah Gregg located?
- Johannah Gregg's practice location on file with NPPES is 280 S 1st Ave, Mill City, OR 97360-2324.
- What is Johannah Gregg's phone number?
- The practice phone number listed in the NPPES registry for Johannah Gregg is (503) 897-4100.
- Does Johannah Gregg accept Medicare?
- Johannah Gregg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johannah Gregg's NPI active?
- Yes — Johannah Gregg's NPI (1790456895) is active in the NPPES registry as of the last update on 2021-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.