William Isaacson, MD
NPI 1164417648 · Interventional Pain Medicine Physician · Havertown, PA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Isaacson, MD is a Interventional Pain Medicine Physician provider in Havertown, PA (NPI 1164417648).
Provider details
- NPI number
- 1164417648
- Entity type
- Individual
- Primary specialty
- Interventional Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD029698E (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2005-09-12
- Last updated
- 2011-10-17
Frequently asked questions
- What is William Isaacson's NPI number?
- William Isaacson's National Provider Identifier (NPI) is 1164417648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Isaacson's specialty?
- William Isaacson is listed in the NPPES registry with a primary specialty of Interventional Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Isaacson located?
- William Isaacson's practice location on file with NPPES is 2010 Old West Chester Pike, Havertown, PA 19083.
- What is William Isaacson's phone number?
- The practice phone number listed in the NPPES registry for William Isaacson is (610) 789-8070.
- Does William Isaacson accept Medicare?
- William Isaacson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Isaacson's NPI active?
- Yes — William Isaacson's NPI (1164417648) is active in the NPPES registry as of the last update on 2011-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.