Donald Johannessen, MD
NPI 1295800142 · Geriatric Psychiatry Physician · New York, NY
Donald Johannessen, MD is a Geriatric Psychiatry Physician provider in New York, NY (NPI 1295800142).
Provider details
- NPI number
- 1295800142
- Entity type
- Individual
- Primary specialty
- Geriatric Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 173503 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Escitalopram Oxalate | 63 |
| Gabapentin | 55 |
| Mirtazapine | 47 |
| Trazodone Hcl | 32 |
| Galantamine Hbrbrand: Galantamine Er | 30 |
| Desvenlafaxine Succinatebrand: Desvenlafaxine Succinate Er | 26 |
| Citalopram Hydrobromidebrand: Citalopram Hbr | 20 |
| Lorazepam | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Donald Johannessen's NPI number?
- Donald Johannessen's National Provider Identifier (NPI) is 1295800142, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Johannessen's specialty?
- Donald Johannessen is listed in the NPPES registry with a primary specialty of Geriatric Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Johannessen located?
- Donald Johannessen's practice location on file with NPPES is 425 E 79th St, New York, NY 10021-1037.
- What is Donald Johannessen's phone number?
- The practice phone number listed in the NPPES registry for Donald Johannessen is (212) 249-4739.
- Is Donald Johannessen's NPI active?
- Yes — Donald Johannessen's NPI (1295800142) 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.