Physician Profile

Unclaimed Profile

About O'BRIEN

John M O'Brien, MD practises family medicine in Chelsea, MI. John is also listed as specialising in family medicine — adolescent medicine.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.

Areas of Expertise

Family Medicine (Primary)
Family Medicine — Adolescent Medicine (Additional)

Common questions

What does Dr. O'Brien specialise in?

Dr. O'Brien is a family doctor in Chelsea, MI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Family Medicine”.

NPI registry

Where is Dr. O'Brien located?

Dr. O'Brien is listed at 14700 EAST OLD US 12, Chelsea, MI 48118. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. O'Brien's phone number?

The number on file is (734) 475-1321. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. O'Brien's NPI number?

Dr. O'Brien's National Provider Identifier is 1639268584. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

How long has Dr. O'Brien been practising?

Dr. O'Brien has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.

NPI registry

Has Dr. O'Brien confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Brien. If this is you, claiming it is free.

Guide.md

Licensing & Certification

MI license4301043586
NPI1639268584
NPI issued10/11/2006

Source: NPPES NPI Registry

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Related providers

Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.

Other family doctors at this location 6

Same specialty, same street address — most likely the same department or group.

Related specialists at this location 4

Clinically related specialties at the same address — the people this provider most likely works alongside.

Also at this address 4

Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.

More connections — 4 related providers in 1 group

Other family doctors in Chelsea 4

Same specialty, same city.

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.