Quick answers
- Does Mark R. Harrigan accept Medicare assignment?
- Yes. Medicare's clinician data says Mark R. Harrigan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mark R. Harrigan see?
- In 2024, CMS data shows 217 Original Medicare patients and 481 services for Mark R. Harrigan. This counts Original Medicare only and measures volume, not quality.
- What is Mark R. Harrigan's NPI number?
- 1336176585. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mark R. Harrigan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 217 |
|---|---|
| Services billed to Medicare | 481 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)73 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)68 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)36 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)35 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)35 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Stroke or mini-stroke54%
- Arthritis52%
- Ischemic heart disease41%
- Diabetes34%
Hospitals where Mark R. Harrigan works
Medicare's Facility Affiliation Data lists Mark R. Harrigan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- DCH Regional Medical CenterTuscaloosa, AL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 010092
- University of Alabama HospitalBirmingham, AL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 010033
Practice locations
Addresses where Mark R. Harrigan is enrolled with Medicare (CMS data updated October 2, 2026).
- 619 19th St SBirmingham, AL 35246 (205) 934‑3460
Group practices
Medicare enrollment lists Mark R. Harrigan as a member of this group (CMS data updated October 2, 2026).
- University of Alabama Health Services Foundation, PC2,814 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Birmingham
Clinicians with the same Medicare primary specialty in Birmingham, AL — not a recommendation.
Other clinicians in University of Alabama Health Services Foundation, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336176585 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians