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Francis Duffy, MD
NPI 1588865232 · Internal Medicine Physician · Tulsa, OK
Francis Duffy, MD is a Internal Medicine Physician provider in Tulsa, OK (NPI 1588865232).
Provider details
- NPI number
- 1588865232
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 9098 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 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
4502 E 41st St
Tulsa, OK 74135-2553
Phone: (918) 619-4400
Fax: (918) 619-4152
Street-level locationGet directions
Mailing address
Po Box 268838
Oklahoma City, OK 73126-8838
Registry dates
- Enumerated
- 2007-05-30
- Last updated
- 2014-07-25
Frequently asked questions
- What is Francis Duffy's NPI number?
- Francis Duffy's National Provider Identifier (NPI) is 1588865232, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Francis Duffy's specialty?
- Francis Duffy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Francis Duffy located?
- Francis Duffy's practice location on file with NPPES is 4502 E 41st St, Tulsa, OK 74135-2553.
- What is Francis Duffy's phone number?
- The practice phone number listed in the NPPES registry for Francis Duffy is (918) 619-4400.
- Is Francis Duffy's NPI active?
- Yes — Francis Duffy's NPI (1588865232) is active in the NPPES registry as of the last update on 2014-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.