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Stephen Underwood, M.D.
NPI 1831361187 · Psychiatry Physician · Radnor, PA
Stephen Underwood, M.D. is a Psychiatry Physician provider in Radnor, PA (NPI 1831361187).
Provider details
- NPI number
- 1831361187
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD041654L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
623 Glenmary Rd
Radnor, PA 19087-4433
Phone: (610) 989-1600
Fax: (717) 705-8179
Street-level locationGet directions
Mailing address
623 Glenmary Rd
Radnor, PA 19087-4433
Registry dates
- Enumerated
- 2008-03-27
- Last updated
- 2008-03-27
Frequently asked questions
- What is Stephen Underwood's NPI number?
- Stephen Underwood's National Provider Identifier (NPI) is 1831361187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Underwood's specialty?
- Stephen Underwood is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Underwood located?
- Stephen Underwood's practice location on file with NPPES is 623 Glenmary Rd, Radnor, PA 19087-4433.
- What is Stephen Underwood's phone number?
- The practice phone number listed in the NPPES registry for Stephen Underwood is (610) 989-1600.
- Is Stephen Underwood's NPI active?
- Yes — Stephen Underwood's NPI (1831361187) is active in the NPPES registry as of the last update on 2008-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.