Harold Koller, M.D.
NPI 1811935638 · Ophthalmology Physician · Meadowbrook, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Koller, M.D. is a Ophthalmology Physician provider in Meadowbrook, PA (NPI 1811935638).
Provider details
- NPI number
- 1811935638
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD009944E (LA)
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
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
- 2006-06-03
- Last updated
- 2012-08-03
Frequently asked questions
- What is Harold Koller's NPI number?
- Harold Koller's National Provider Identifier (NPI) is 1811935638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Koller's specialty?
- Harold Koller is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Harold Koller located?
- Harold Koller's practice location on file with NPPES is 1650 Huntingdon Pike, Meadowbrook, PA 19046-8004.
- What is Harold Koller's phone number?
- The practice phone number listed in the NPPES registry for Harold Koller is (215) 947-6660.
- Does Harold Koller accept Medicare?
- Harold Koller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harold Koller's NPI active?
- Yes — Harold Koller's NPI (1811935638) is active in the NPPES registry as of the last update on 2012-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.