Robert Allister, M.D.
NPI 1598804411 · Psychiatry Physician · Rochester, NH
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Allister, M.D. is a Psychiatry Physician provider in Rochester, NH (NPI 1598804411).
Provider details
- NPI number
- 1598804411
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 9762 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,524 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 397 | $141 |
| Psychotherapy, 45 Minutes90834 | 292 | $91 |
| Psychotherapy, 45 Minutes90834 | 189 | $87 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 166 | $64 |
| Psychotherapy, 1 Hour90837 | 133 | $131 |
| Psychotherapy, 30 Minutes90832 | 84 | $70 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 49 |
| Sertraline Hcl | 38 |
| Divalproex Sodium | 36 |
| Escitalopram Oxalate | 27 |
| Olanzapine | 25 |
| Aripiprazole | 23 |
| Quetiapine Fumarate | 19 |
| Lamotrigine | 16 |
| Clonazepam | 12 |
| Lorazepam |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Robert Allister's NPI number?
- Robert Allister's National Provider Identifier (NPI) is 1598804411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Allister's specialty?
- Robert Allister is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Allister located?
- Robert Allister's practice location on file with NPPES is 25 Old Dover Rd, Rochester, NH 03867-3464.
- What is Robert Allister's phone number?
- The practice phone number listed in the NPPES registry for Robert Allister is (603) 335-6470.
- Does Robert Allister accept Medicare?
- Robert Allister is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Allister's NPI active?
- Yes — Robert Allister's NPI (1598804411) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.