NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1801868666 MD
Verify on CMS → John Allen, MD
Hospitalist Physician in Olive Branch, Mississippi.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,950 in Hospitalist Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
15K
Medicare Part D claims · 785 beneficiaries · Hospitalist Physician avg: 940
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$56.26
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Allen, MD filed 15,007 Medicare Part D claims in 2024 as a Hospitalist Physician in Olive Branch, Mississippi, prescribing 90% generic.
- 15K
- Part D claims, 2024
- 90%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about John Allen, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1801868666), first enumerated 02/06/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 15,007 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$56.26 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1801868666 · Hospitalist Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1801868666
- ENUM-LEGACY 2006
- TAX-MID 18K Hospitalist Physician
- RX-HEAVY 15K claims
- BOOK-THIN 102 in Mississippi
- PHOTO-ENUM Apolinaris Torralba · 2006
John Allen, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
15,007 ≥ 98th percentile 98% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
John Allen, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about John Allen, MD?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
15,007 16× vs specialty avg
Specialty distribution in Mississippi
How Hospitalist Physician compares to other specialties among Mississippi providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hospitalist Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1801868666 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/06/2006 |
Hospital and facility affiliations
Facilities where John Allen, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Methodist Inpatient Physicians LLC
Olive Branch, MS
Primary Care Group, LLC
Olive Branch, MS
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for John Allen, MD. Source: openpaymentsdata.cms.gov.
Total received
$56
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
John Allen, MD - brand share 10.0%
Hospitalist Physician average
10% brand-name claims vs 90% generic, on 15,007 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
15,007
Total Claims
$1.1M
Total Drug Cost
785
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 31,476.9
- Total Day Supply
- 905,239
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $930K
- Generic Drug Cost
- $180K
- Opioid Claims
- 629 (4.2% rate)
- Antibiotic Claims
- 437
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 90, 65-74: 355, 75-84: 262, 85+: 78
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Allen, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
645 claims
- Amlodipine Besylate
Amlodipine Besylate
541 claims
- Pantoprazole Sodium
Pantoprazole Sodium
434 claims
- Levothyroxine Sodium
Levothyroxine Sodium
396 claims
- Gabapentin
Gabapentin
345 claims
- Prednisone
Prednisone
332 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
308 claims
- Montelukast Sodium
Montelukast Sodium
289 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 645 |
| Amlodipine Besylate | 541 |
| Pantoprazole Sodium | 434 |
| Levothyroxine Sodium | 396 |
| Gabapentin | 345 |
| Prednisone | 332 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 308 |
| Montelukast Sodium | 289 |
| Omeprazole | 288 |
| Alprazolam | 274 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How John Allen, MD fits within the Hospitalist Physician landscape nationally.
17,950
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
940
Avg Claims per Provider
John Allen, MD's 15,007 claims are above the specialty average of 940.
Nationwide Hospitalist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Allen, both outside Mississippi so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospitalist Physician Providers in Mississippi
Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as Allen.
One of 102 Hospitalist Physician providers enrolled in Mississippi, 5 are shown here.
Dr. Shabina Afridi
MD
Canton, MS
Dr. Mansoor Ahmad
MD
Hattiesburg, MS
Dr. Mohammed Ahmed
MD
Hattiesburg, MS
Dr. Mohamed Allami
MD
Oxford, MS
Dr. Radha Alur
MD
Jackson, MS
Compare Hospitalist Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Allen, MD's specialty? ▼
John Allen, MD specializes in Hospitalist Physician and practices in Olive Branch, Mississippi. Credentials: MD.
How much does John Allen, MD prescribe under Medicare Part D? ▼
In 2024, John Allen, MD wrote 15,007 Medicare Part D claims totaling $1.1M in drug costs for 785 beneficiaries.
Where is John Allen, MD located? ▼
John Allen, MD is located at 5480 GOODMAN RD STE 1, Olive Branch, MS, 38654. Phone: (662) 874-6507.
What is John Allen, MD's NPI number? ▼
John Allen, MD's National Provider Identifier (NPI) is 1801868666, issued on 02/06/2006.
Does John Allen, MD prescribe more brand-name or generic drugs? ▼
John Allen, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $930K in brand drug costs.
Does John Allen, MD prescribe opioids? ▼
Yes, John Allen, MD had 629 opioid claims in 2024 with an opioid prescribing rate of 4.2%.
How many Hospitalist Physician providers are there in the US? ▼
There are 17,950 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 940 Medicare Part D claims per year.
What drugs does John Allen, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Allen, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Allen, MD accept Medicare? ▼
John Allen, MD appears in CMS Medicare data with 15,007 Part D claims and 785 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Allen, MD's credentials? ▼
John Allen, MD's NPI is 1801868666 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.