Diana Cer, DO
NPI 1225261746 · Emergency Medicine Physician · Englewood, CO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Cer, DO is a Emergency Medicine Physician provider in Englewood, CO (NPI 1225261746).
Provider details
- NPI number
- 1225261746
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- C2-0011001 (DE)
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 tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
201 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 150 | $170 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 36 | $117 |
| Critical Care, First 30-74 Minutes99291 | 15 | $208 |
Typical Medicare-allowed amounts for these services range $117–$208 (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.
Practice location
Mailing address
Additional practice locations (2)
- 404 Fox Hunt DrBear, DE 19701-2538Phone: (302) 652-2455Fax: (302) 322-6251
- 1401 Foulk Rd Ste 100bWilmington, DE 19803-2764Phone: (302) 477-3300
Registry dates
- Enumerated
- 2009-09-01
- Last updated
- 2022-10-23
- Certified
- 2022-10-23
Frequently asked questions
- What is Diana Cer's NPI number?
- Diana Cer's National Provider Identifier (NPI) is 1225261746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Cer's specialty?
- Diana Cer is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Cer located?
- Diana Cer's practice location on file with NPPES is 501 E Hampden Ave, Englewood, CO 80113-2702.
- What is Diana Cer's phone number?
- The practice phone number listed in the NPPES registry for Diana Cer is (303) 953-5643.
- Does Diana Cer accept Medicare?
- Diana Cer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Cer's NPI active?
- Yes — Diana Cer's NPI (1225261746) is active in the NPPES registry as of the last update on 2022-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.