John Holland, M.D.
NPI 1821088071 · Psychiatry Physician · Denver, CO
John Holland, M.D. is a Psychiatry Physician provider in Denver, CO (NPI 1821088071).
Provider details
- NPI number
- 1821088071
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5584 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-27
- Last updated
- 2010-10-27
Frequently asked questions
- What is John Holland's NPI number?
- John Holland's National Provider Identifier (NPI) is 1821088071, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Holland's specialty?
- John Holland is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Holland located?
- John Holland's practice location on file with NPPES is 777 Bannock St, Denver, CO 80204-4507.
- What is John Holland's phone number?
- The practice phone number listed in the NPPES registry for John Holland is (720) 236-2390.
- Is John Holland's NPI active?
- Yes — John Holland's NPI (1821088071) is active in the NPPES registry as of the last update on 2010-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.