Jennifer Gregg, MD
NPI 1427617117 · Family Medicine Physician · Roseville, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Gregg, MD is a Family Medicine Physician provider in Roseville, CA (NPI 1427617117).
Provider details
- NPI number
- 1427617117
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A181124 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
430 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 198 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 49 | $92 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 41 | $121 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 25 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 24 | $138 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 280 | 76 |
| Levothyroxine Sodium | 197 | 50 |
| Amlodipine Besylate | 174 | 47 |
| Lisinopril | 115 | 32 |
| Losartan Potassium | 113 | 35 |
| Omeprazole | 109 | 30 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-06
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Jennifer Gregg's NPI number?
- Jennifer Gregg's National Provider Identifier (NPI) is 1427617117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Gregg's specialty?
- Jennifer Gregg is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Gregg located?
- Jennifer Gregg's practice location on file with NPPES is 568 N Sunrise Ave Ste 250, Roseville, CA 95661-3097.
- What is Jennifer Gregg's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Gregg is (916) 865-1140.
- Does Jennifer Gregg accept Medicare?
- Jennifer Gregg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Gregg's NPI active?
- Yes — Jennifer Gregg's NPI (1427617117) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.