Quick answers
- Does Glen P. Greenough accept Medicare assignment?
- Yes. Medicare's clinician data says Glen P. Greenough accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Glen P. Greenough see?
- In 2024, CMS data shows 218 Original Medicare patients and 434 services for Glen P. Greenough. This counts Original Medicare only and measures volume, not quality.
- What is Glen P. Greenough's NPI number?
- 1538237839. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Glen P. Greenough, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 218 |
|---|---|
| Services billed to Medicare | 434 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)123 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)101 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)58 services
- Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)34 services
- Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation (G0399)28 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure68%
- High cholesterol63%
- Arthritis49%
- Depression35%
- Anxiety30%
- Diabetes26%
Hospitals where Glen P. Greenough works
Medicare's Facility Affiliation Data lists Glen P. Greenough at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
Practice locations
Addresses where Glen P. Greenough is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Medical Ctr DrLebanon, NH 03756 (603) 650‑5000
- 130 Fisher RdBerlin, VT 05602 (802) 371‑4100
Group practices
Medicare enrollment lists Glen P. Greenough as a member of these groups (CMS data updated October 2, 2026).
- Dartmouth-Hitchcock Clinic1,472 clinicians in the group
- Mary Hitchcock Memorial Hospital1,280 clinicians in the group
Specialties
- Psychiatryprimary
- Sleep Medicinealso
Other psychiatrists in Lebanon
Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.
Other clinicians in Dartmouth-Hitchcock Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538237839 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians