Karen Greenwood, MD
NPI 1275501322 · Family Medicine Physician · Littleton, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Greenwood, MD is a Family Medicine Physician provider in Littleton, CO (NPI 1275501322).
Provider details
- NPI number
- 1275501322
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 01050847A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 106 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 428 | 129 |
| Atorvastatin Calcium | 411 | 122 |
| Lisinopril | 302 | 89 |
| Rosuvastatin Calcium | 289 | 85 |
| Omeprazole | 259 | 90 |
| Simvastatin | 240 | 71 |
| Losartan Potassium | 233 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2021-05-12
- Certified
- 2021-05-12
Frequently asked questions
- What is Karen Greenwood's NPI number?
- Karen Greenwood's National Provider Identifier (NPI) is 1275501322, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Greenwood's specialty?
- Karen Greenwood is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Greenwood located?
- Karen Greenwood's practice location on file with NPPES is 5257 S Wadsworth Blvd, Littleton, CO 80123-2228.
- What is Karen Greenwood's phone number?
- The practice phone number listed in the NPPES registry for Karen Greenwood is (303) 338-4545.
- Does Karen Greenwood accept Medicare?
- Karen Greenwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Greenwood's NPI active?
- Yes — Karen Greenwood's NPI (1275501322) is active in the NPPES registry as of the last update on 2021-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.