Mary Shannon, M.D.
NPI 1952499816 · Internal Medicine Physician · Opelika, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Shannon, M.D. is a Internal Medicine Physician provider in Opelika, AL (NPI 1952499816).
Provider details
- NPI number
- 1952499816
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 25078 (AL)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
507 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 258 | $71 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 86 | $106 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 68 | $104 |
| Critical Care, First 30-74 Minutes99291 | 50 | $192 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 32 | $155 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$69 across 4 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
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2010-06-25
Frequently asked questions
- What is Mary Shannon's NPI number?
- Mary Shannon's National Provider Identifier (NPI) is 1952499816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Shannon's specialty?
- Mary Shannon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Shannon located?
- Mary Shannon's practice location on file with NPPES is 121 N 20th St, Opelika, AL 36801-5449.
- What is Mary Shannon's phone number?
- The practice phone number listed in the NPPES registry for Mary Shannon is (334) 749-3385.
- Does Mary Shannon accept Medicare?
- Mary Shannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Shannon's NPI active?
- Yes — Mary Shannon's NPI (1952499816) is active in the NPPES registry as of the last update on 2010-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.