Joan Mack, M.D.
NPI 1558309872 · General Practice Physician · Darby, PA
Joan Mack, M.D. is a General Practice Physician provider in Darby, PA (NPI 1558309872).
Provider details
- NPI number
- 1558309872
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD030223E (PA)
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
- 2006-06-02
- Last updated
- 2015-08-28
Frequently asked questions
- What is Joan Mack's NPI number?
- Joan Mack's National Provider Identifier (NPI) is 1558309872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Mack's specialty?
- Joan Mack is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Joan Mack located?
- Joan Mack's practice location on file with NPPES is 1500 Lansdowne Ave, Darby, PA 19023-1200.
- What is Joan Mack's phone number?
- The practice phone number listed in the NPPES registry for Joan Mack is (610) 237-4814.
- Is Joan Mack's NPI active?
- Yes — Joan Mack's NPI (1558309872) is active in the NPPES registry as of the last update on 2015-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.