John Allen, MD
NPI 1801868666 · Internal Medicine Physician · Olive Branch, MS
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Allen, MD is a Internal Medicine Physician provider in Olive Branch, MS (NPI 1801868666).
Provider details
- NPI number
- 1801868666
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 17289 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,872 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,440 | $90 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 115 | $46 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 97 | $32 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 51 | $136 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 47 | $115 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 179 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 645 | 192 |
| Amlodipine Besylate | 541 | 154 |
| Pantoprazole Sodium | 434 | 131 |
| Levothyroxine Sodium | 396 | 99 |
| Gabapentin | 345 | 88 |
| Prednisone | 332 | 165 |
| Hydrocodone/Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$56 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 (3)
- 4250 Bethel RdOlive Branch, MS 38654-8737Phone: (901) 516-1290Fax: (901) 516-1220
- 7163 Goodman RdOlive Branch, MS 38654-1904Phone: (662) 874-6507Fax: (662) 932-8197
- 7691 Poplar AveGermantown, TN 38138-3904Phone: (901) 516-1290Fax: (901) 516-1220
Registry dates
- Enumerated
- 2006-02-06
- Last updated
- 2024-02-02
- Certified
- 2024-02-02
Frequently asked questions
- What is John Allen's NPI number?
- John Allen's National Provider Identifier (NPI) is 1801868666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Allen's specialty?
- John Allen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Allen located?
- John Allen's practice location on file with NPPES is 5480 Goodman Rd Ste 1, Olive Branch, MS 38654-7902.
- What is John Allen's phone number?
- The practice phone number listed in the NPPES registry for John Allen is (662) 874-6507.
- Does John Allen accept Medicare?
- John Allen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Allen's NPI active?
- Yes — John Allen's NPI (1801868666) is active in the NPPES registry as of the last update on 2024-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.