David Rorison, M.D.
NPI 1083650253 · Emergency Medicine Physician · Pasadena, MD
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Rorison, M.D. is a Emergency Medicine Physician provider in Pasadena, MD (NPI 1083650253).
Provider details
- NPI number
- 1083650253
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0028260 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,095 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 324 | $95 |
| X-Ray of Chest, 2 Views71046 | 245 | $30 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 173 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 154 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 153 | $134 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 133 | 132 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 76 | 74 |
| Methylprednisolone | 74 | 73 |
| Cefuroxime Axetilbrand: Cefuroxime | 41 | 41 |
| Azithromycin | 36 | 36 |
| Prednisone | 32 | 32 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$487 across 2 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
Additional practice locations (1)
- 22 S Greene StBaltimore, MD 21201-1544Phone: (410) 328-4383
Registry dates
- Enumerated
- 2006-06-22
- Last updated
- 2021-08-03
- Certified
- 2021-08-03
Frequently asked questions
- What is David Rorison's NPI number?
- David Rorison's National Provider Identifier (NPI) is 1083650253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Rorison's specialty?
- David Rorison is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Rorison located?
- David Rorison's practice location on file with NPPES is 8105 Ritchie Hwy, Pasadena, MD 21122-3905.
- What is David Rorison's phone number?
- The practice phone number listed in the NPPES registry for David Rorison is (443) 573-0564.
- Does David Rorison accept Medicare?
- David Rorison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Rorison's NPI active?
- Yes — David Rorison's NPI (1083650253) is active in the NPPES registry as of the last update on 2021-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.