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William Iobst, MD
NPI 1568491116 · Rheumatology Physician · Allentown, PA
William Iobst, MD is a Rheumatology Physician provider in Allentown, PA (NPI 1568491116).
Provider details
- NPI number
- 1568491116
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD030188E (PA)
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
19 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
1210 S Cedar Crest Blvd
Suite 3600
Allentown, PA 18103-6229
Phone: (610) 402-1150
Street-level locationGet directions
Mailing address
Po Box 1754
Allentown, PA 18105-1754
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2010-11-09
Frequently asked questions
- What is William Iobst's NPI number?
- William Iobst's National Provider Identifier (NPI) is 1568491116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Iobst's specialty?
- William Iobst is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Iobst located?
- William Iobst's practice location on file with NPPES is 1210 S Cedar Crest Blvd, Allentown, PA 18103-6229.
- What is William Iobst's phone number?
- The practice phone number listed in the NPPES registry for William Iobst is (610) 402-1150.
- Is William Iobst's NPI active?
- Yes — William Iobst's NPI (1568491116) is active in the NPPES registry as of the last update on 2010-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.