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Donald Zack, M.D.
NPI 1427094069 · Ophthalmology Physician · Baltimore, MD
Donald Zack, M.D. is a Ophthalmology Physician provider in Baltimore, MD (NPI 1427094069).
Provider details
- NPI number
- 1427094069
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D36897 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
600 N Wolfe St
Baltimore, MD 21287-0005
Phone: (410) 955-5080
Street-level locationGet directions
Mailing address
Po Box 64481
Baltimore, MD 21264-4481
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2013-02-21
Frequently asked questions
- What is Donald Zack's NPI number?
- Donald Zack's National Provider Identifier (NPI) is 1427094069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Zack's specialty?
- Donald Zack is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Zack located?
- Donald Zack's practice location on file with NPPES is 600 N Wolfe St, Baltimore, MD 21287-0005.
- What is Donald Zack's phone number?
- The practice phone number listed in the NPPES registry for Donald Zack is (410) 955-5080.
- Is Donald Zack's NPI active?
- Yes — Donald Zack's NPI (1427094069) is active in the NPPES registry as of the last update on 2013-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.