David Irwin, MD
NPI 1194986356 · Neurology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Irwin, MD is a Neurology Physician provider in Philadelphia, PA (NPI 1194986356).
Provider details
- NPI number
- 1194986356
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD439211 (PA)
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
17 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
177 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 66 | $144 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 56 | $99 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $67 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 14 | $80 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 13 | $185 |
Typical Medicare-allowed amounts for these services range $67–$185 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sertraline Hcl | 164 | 40 |
| Donepezil Hcl | 128 | 41 |
| Trazodone Hcl | 124 | 28 |
| Quetiapine Fumarate | 110 | 35 |
| Memantine Hcl | 79 | 30 |
| Clonazepam | 69 | 14 |
| Escitalopram Oxalate | 44 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-20
- Last updated
- 2014-05-30
Frequently asked questions
- What is David Irwin's NPI number?
- David Irwin's National Provider Identifier (NPI) is 1194986356, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Irwin's specialty?
- David Irwin is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is David Irwin located?
- David Irwin's practice location on file with NPPES is 3400 Spruce Street, Philadelphia, PA 19104.
- What is David Irwin's phone number?
- The practice phone number listed in the NPPES registry for David Irwin is (215) 662-3606.
- Does David Irwin accept Medicare?
- David Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Irwin's NPI active?
- Yes — David Irwin's NPI (1194986356) is active in the NPPES registry as of the last update on 2014-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.