Douglas Ader, DO, PA-C
NPI 1235486838 · Emergency Medicine Physician · West Chester, PA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Ader, DO, PA-C is a Emergency Medicine Physician provider in West Chester, PA (NPI 1235486838).
Provider details
- NPI number
- 1235486838
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 25MP00289600 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,699 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 | 585 | $177 |
| Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042 | 524 | $7 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 417 | $122 |
| Critical Care, First 30-74 Minutes99291 | 121 | $214 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 38 | $72 |
| Insertion of Tube for Infusion With Imaging Guidance and Review By Radiologist, Patient 5 Years Or Older36573 | 14 | $83 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 17 | 17 |
| Cefpodoxime Proxetil | 13 | 13 |
| Prednisone | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 4755 Ogletown Stanton RdNewark, DE 19718-2200Phone: (302) 733-3904
Registry dates
- Enumerated
- 2012-08-14
- Last updated
- 2022-07-04
- Certified
- 2022-07-04
Frequently asked questions
- What is Douglas Ader's NPI number?
- Douglas Ader's National Provider Identifier (NPI) is 1235486838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Ader's specialty?
- Douglas Ader is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Ader located?
- Douglas Ader's practice location on file with NPPES is 701 E Marshall St, West Chester, PA 19380.
- What is Douglas Ader's phone number?
- The practice phone number listed in the NPPES registry for Douglas Ader is (610) 431-5151.
- Does Douglas Ader accept Medicare?
- Douglas Ader is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Ader's NPI active?
- Yes — Douglas Ader's NPI (1235486838) is active in the NPPES registry as of the last update on 2022-07-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.