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Diane Howlin, M.D.
NPI 1417964552 · Internal Medicine Physician · Chelsea, MI
Diane Howlin, M.D. is a Internal Medicine Physician provider in Chelsea, MI (NPI 1417964552).
Provider details
- NPI number
- 1417964552
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4301052421 (MI)
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
1620 Commerce Park Dr
Suite 100
Chelsea, MI 48118-1620
Phone: (734) 475-2921
Fax: (734) 475-2945
Street-level locationGet directions
Mailing address
1620 Commerce Park Dr
Chelsea, MI 48118-1620
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Diane Howlin's NPI number?
- Diane Howlin's National Provider Identifier (NPI) is 1417964552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Howlin's specialty?
- Diane Howlin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Howlin located?
- Diane Howlin's practice location on file with NPPES is 1620 Commerce Park Dr, Chelsea, MI 48118-1620.
- What is Diane Howlin's phone number?
- The practice phone number listed in the NPPES registry for Diane Howlin is (734) 475-2921.
- Is Diane Howlin's NPI active?
- Yes — Diane Howlin's NPI (1417964552) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.