NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1073952834 M.D.
Verify on CMS → Aaron Tannenbaum, M.D.
Internal Medicine Physician in Lebanon, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 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
870
Medicare Part D claims · 173 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
0%
generic claims · 65% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Aaron Tannenbaum, M.D. filed 870 Medicare Part D claims in 2023 as an Internal Medicine Physician in Lebanon, New Hampshire, prescribing 0% generic.
- 870
- Part D claims, 2023
- 0%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Aaron Tannenbaum, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
870 Top 27% higher than 73% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Aaron Tannenbaum, M.D. 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 Aaron Tannenbaum, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
870 68% vs specialty avg
Specialty distribution in New Hampshire
How Internal Medicine Physician compares to other specialties among New Hampshire 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).
Aaron Tannenbaum, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at 1 MEDICAL CENTER DR, Lebanon, NH, 03756, with a listed phone of (603) 650-5533. NPI 1073952834 was issued on 06/14/2013.
Medicare Part D records for calendar year 2023 show 870 prescription claims written by this provider, covering 173 Medicare beneficiaries and totaling roughly $488K in drug spend, split 65% brand-name and 0% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1073952834 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/14/2013 |
Hospital and facility affiliations
Facilities where Aaron Tannenbaum, M.D. 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.
Mary Hitchcock Memorial Hospital
★★★☆☆ 3/5
Lebanon, NH
Acute Care Hospitals
CMS CCN: 300003
Dartmouth-Hitchcock Clinic
Lebanon, NH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Aaron Tannenbaum, M.D. - brand share 65.0%
Internal Medicine Physician average
65% brand-name claims vs 0% generic, on 870 2023 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 2023.
870
Total Claims
$488K
Total Drug Cost
173
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,241
- Total Day Supply
- 34,937
- Brand vs Generic
- 65% brand / 0% generic
- Brand Drug Cost
- $476K
- Antibiotic Claims
- 62
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 31, 65-74: 71, 75-84: 56, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Aaron Tannenbaum, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Symbicort
Symbicort
96 claims
- Spiriva Respimat
Spiriva Respimat
76 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
70 claims
- Anoro Ellipta
Anoro Ellipta
68 claims
- Prednisone
Prednisone
65 claims
- Trelegy Ellipta
Trelegy Ellipta
57 claims
- Fluticasone Propio…
Fluticasone Propionate
43 claims
- Montelukast Sodium 38
Montelukast Sodium
38 claims
| Drug | Claims |
|---|---|
| Symbicort Budesonide/Formoterol Fumarate | 96 |
| Spiriva Respimat Tiotropium Bromide | 76 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 70 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 68 |
| Prednisone | 65 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 57 |
| Fluticasone Propionate | 43 |
| Montelukast Sodium | 38 |
| Azithromycin | 32 |
| Nucala Mepolizumab | 28 |
* 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 Aaron Tannenbaum, M.D. fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Aaron Tannenbaum, M.D.'s 870 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Tannenbaum.
Dr. Lauren Abbott
MD
Portsmouth, NH
Dr. Cherif Abdelmalek
M.D.
Nashua, NH
Dr. Champa Abeysinghe
M.D.
New London, NH
Dr. Suzanne Abkowitz
MD
North Conway, NH
Dr. Arthur Ablayev
MD
Concord, NH
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New Hampshire medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Aaron Tannenbaum, M.D.'s specialty? ▼
Aaron Tannenbaum, M.D. specializes in Internal Medicine Physician and practices in Lebanon, New Hampshire. Credentials: M.D..
How much does Aaron Tannenbaum, M.D. prescribe under Medicare Part D? ▼
In 2023, Aaron Tannenbaum, M.D. wrote 870 Medicare Part D claims totaling $488K in drug costs for 173 beneficiaries.
Where is Aaron Tannenbaum, M.D. located? ▼
Aaron Tannenbaum, M.D. is located at 1 MEDICAL CENTER DR, Lebanon, NH, 03756. Phone: (603) 650-5533.
What is Aaron Tannenbaum, M.D.'s NPI number? ▼
Aaron Tannenbaum, M.D.'s National Provider Identifier (NPI) is 1073952834, issued on 06/14/2013.
Does Aaron Tannenbaum, M.D. prescribe more brand-name or generic drugs? ▼
Aaron Tannenbaum, M.D.'s prescribing is 65% brand-name and 0% generic drugs by claim count, with $476K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Aaron Tannenbaum, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Aaron Tannenbaum, M.D.'s most frequently prescribed drugs include Symbicort, Spiriva Respimat, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Aaron Tannenbaum, M.D. accept Medicare? ▼
Aaron Tannenbaum, M.D. appears in CMS Medicare data with 870 Part D claims and 173 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Aaron Tannenbaum, M.D.'s credentials? ▼
Aaron Tannenbaum, M.D.'s NPI is 1073952834 with credentials M.D.. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.