NPPES file of Aug 9, 2026

Aaron Steven Geller, MD

Pain Medicine Physician · Nashua, NH

Aaron Steven Geller, MD is a pain medicine physician with a practice address in Nashua, New Hampshire, and NPI 1831128479, issued on Jul 3, 2006. Check the license (New Hampshire 10423, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831128479
Name
Aaron Steven Geller
Credential
MD
Primary taxonomy
Pain Medicine Physician 208VP0000X
License number
10423 NH
Self-reported in NPPES; status is on the state search
Practice location
154 Broad St, Nashua, NH 03063
Phone
(603) 882-9872
Enumerated
Jul 3, 2006
Record last updated
Sep 17, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(603) 465-7829
Medicaid ID
30011695 NH
Medicare enrollment
Enrolled (PECOS I20040811000784); accepts Medicare assignment
Medical or professional school
Perelman School Of Med At The University Of Pennsylvania, 1991
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 154 Broad St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Constance Buttlar, M.D.Anatomic Pathology & Clinical Pathology Physician1487647301
  2. Michael Gold, M.D.Anatomic Pathology & Clinical Pathology Physician1275526147
  3. James Heath, M.D.Anatomic Pathology & Clinical Pathology Physician1770576688
  4. Kristy Kelley, LMT, MMPMassage Therapist1518225044
  5. Paula Kramer, LCMHC LICENSED CLINIMental Health Counselor1003935057
  6. Kimberly Lansford, LCMHCAddiction (Substance Use Disorder) Counselor1952404154

Verify Aaron Steven Geller in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 10423
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Hampshire license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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96% fewer Medicare Part D claims than the average pain medicine physician in 2024

80 Medicare Part D claims, against an average of 2,095 among the 944 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 27 claims were for opioids.

  1. Aaron Geller80
  2. Specialty average2,095

Most prescribed

  1. Baclofen30 claims
  2. Hydrocodone-Acetaminophen14 claims
  3. Gabapentin13 claims
  4. Oxycodone-Acetaminophen13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Pain Medicine Physician providers in New Hampshire

There are 4 pain medicine physician records in New Hampshire.

Other pain medicine physician records in New Hampshire

  1. Deborah Charles, NURSE PRACTITIONERSomersworth, NH1942661558
  2. Nathaniel Harlow, D.O.Lebanon, NH1477700771
  3. Terrence McNamara, DOPeterborough, NH1417042805

Common questions

What is Aaron Steven Geller, MD's NPI number?

Aaron Steven Geller, MD's National Provider Identifier (NPI) is 1831128479, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Aaron Steven Geller, MD located?

The NPPES record lists a practice address at 154 Broad St, Nashua, NH, 03063. Phone: (603) 882-9872. Providers update this record themselves, so call before visiting.

How can I verify Aaron Steven Geller, MD's license?

NPPES lists New Hampshire license number 10423, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Aaron Steven Geller, MD prescribe under Medicare Part D?

In 2024, Aaron Steven Geller, MD had 80 Medicare Part D claims; the average among pain medicine physician prescribers was 2,095. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.