Christina Greig, MD
NPI 1467799502 · Family Medicine Physician · Fairfield, CA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Greig, MD is a Family Medicine Physician provider in Fairfield, CA (NPI 1467799502).
Provider details
- NPI number
- 1467799502
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A138223 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 186 | 63 |
| Losartan Potassium | 87 | 26 |
| Amlodipine Besylate | 84 | 23 |
| Levothyroxine Sodium | 66 | 17 |
| Lisinopril | 56 | 19 |
| Hydrochlorothiazide | 47 | 16 |
| Hydrocodone/Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$373 across 11 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
- 2013-01-09
- Last updated
- 2023-11-27
- Certified
- 2023-11-27
Frequently asked questions
- What is Christina Greig's NPI number?
- Christina Greig's National Provider Identifier (NPI) is 1467799502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Greig's specialty?
- Christina Greig is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Greig located?
- Christina Greig's practice location on file with NPPES is 2201 Courage Dr, Fairfield, CA 94533-6733.
- What is Christina Greig's phone number?
- The practice phone number listed in the NPPES registry for Christina Greig is (707) 784-2010.
- Does Christina Greig accept Medicare?
- Christina Greig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Greig's NPI active?
- Yes — Christina Greig's NPI (1467799502) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.