NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1508887365 MD
Verify on CMS → Joseph Allen, MD
Internal Medicine Physician in Memphis, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal Medicine 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
5K
Medicare Part D claims · 196 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$118.88
7 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Joseph Allen, MD filed 4,778 Medicare Part D claims in 2024 as an Internal Medicine Physician in Memphis, Tennessee, prescribing 87% generic.
- 5K
- Part D claims, 2024
- 87%
- generic prescribing
- $118.88
- industry payments (Sunshine Act)
- ≥93rd
- 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 Joseph 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 1508887365), first enumerated 07/21/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,778 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$118.88 in reported industry payments (7 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.
Compare Allen with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 323 Internal Medicine Physician providers in Memphis, TN →
Also enrolled in Tennessee
- Dr. Damon Abaray, MD Nashville, TN
- Dr. Samuel Abbas, MD Hixson, TN
- Dr. Matthew Abbate, MD Nashville, TN
- Dr. Kazeen Abdullah, M.D. Smyrna, TN
- Dr. Sarmed Abdullah, M.D. Lexington, TN
- Dr. Mark Abi Nader, M.D. Memphis, TN
Other specialties in Memphis: Student in an Organized Health Care Education/Training Program (1,362) · Pharmacist (980) · Family Nurse Practitioner (636) · Mental Health Counselor (416)
CMS NPPES provider registry desk
NPI 1508887365 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1508887365
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- RX-MID 4,778
- BOOK-LIGHT 2,907 in Tennessee
- PHOTO-ENUM Priscilla Carr, MD · 2006
Joseph Allen, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,778 ≥ 93rd percentile 93% 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-eligible specialty (heuristic, not verified)
Joseph Allen, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Joseph Allen, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
4,778 72% vs specialty avg
Specialty distribution in Tennessee
How Internal Medicine Physician compares to other specialties among Tennessee 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 Internal Medicine 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 | 1508887365 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/21/2006 |
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 Joseph Allen, MD. Source: openpaymentsdata.cms.gov.
Total received
$119
Largest payer
Boehringer Ingelheim Pharmaceuticals, Inc.
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
Joseph Allen, MD - brand share 12.0%
Internal Medicine Physician average
12% brand-name claims vs 87% generic, on 4,778 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.
4,778
Total Claims
$358K
Total Drug Cost
196
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,578.967
- Total Day Supply
- 276,699
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $284K
- Generic Drug Cost
- $73K
- Opioid Claims
- 118 (2.5% rate)
- Antibiotic Claims
- 128
Patient Demographics
- Average Patient Age
- 78.0 years
- Avg HCC Risk Score
- 1.04
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Joseph Allen, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Rosuvastatin Calcium
Rosuvastatin Calcium
281 claims
- Levothyroxine Sodium
Levothyroxine Sodium
229 claims
- Amlodipine Besylate
Amlodipine Besylate
169 claims
- Ezetimibe
Ezetimibe
126 claims
- Atorvastatin Calcium
Atorvastatin Calcium
115 claims
- Hydralazine Hcl 108
Hydralazine Hcl
108 claims
- Omeprazole 108
Omeprazole
108 claims
- Alprazolam 94
Alprazolam
94 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 281 |
| Levothyroxine Sodium | 229 |
| Amlodipine Besylate | 169 |
| Ezetimibe | 126 |
| Atorvastatin Calcium | 115 |
| Hydralazine Hcl | 108 |
| Omeprazole | 108 |
| Alprazolam | 94 |
| Duloxetine Hcl | 93 |
| Fluticasone Propionate | 92 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Joseph Allen, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Joseph Allen, MD's 4,778 claims are above the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Allen, both outside Tennessee 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 Internal Medicine Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Allen.
One of 2,907 Internal Medicine Physician providers enrolled in Tennessee, 11 are shown on this page.
Dr. Mouna Abouamara
MD
Johnson City, TN
Dr. Betty Abraham
MD
Chattanooga, TN
Dr. Vandana Abramson
MD
Nashville, TN
Dr. Tarek Absi
MD
Nashville, TN
Dr. Nisreen Abu Al Hommos
M.D.
Memphis, TN
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Joseph Allen, MD's specialty? ▼
Joseph Allen, MD specializes in Internal Medicine Physician and practices in Memphis, Tennessee. Credentials: MD.
How much does Joseph Allen, MD prescribe under Medicare Part D? ▼
In 2024, Joseph Allen, MD wrote 4,778 Medicare Part D claims totaling $358K in drug costs for 196 beneficiaries.
Where is Joseph Allen, MD located? ▼
Joseph Allen, MD is located at 6027 WALNUT GROVE RD, Memphis, TN, 38120. Phone: (901) 525-1438.
What is Joseph Allen, MD's NPI number? ▼
Joseph Allen, MD's National Provider Identifier (NPI) is 1508887365, issued on 07/21/2006.
Does Joseph Allen, MD prescribe more brand-name or generic drugs? ▼
Joseph Allen, MD's prescribing is 12% brand-name and 87% generic drugs by claim count, with $284K in brand drug costs.
Does Joseph Allen, MD prescribe opioids? ▼
Yes, Joseph Allen, MD had 118 opioid claims in 2024 with an opioid prescribing rate of 2.5%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Joseph Allen, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Joseph Allen, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Allen, MD accept Medicare? ▼
Joseph Allen, MD appears in CMS Medicare data with 4,778 Part D claims and 196 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Allen, MD's credentials? ▼
Joseph Allen, MD's NPI is 1508887365 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.