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Edit this profileAt a glance
- 575 Beech St, Holyoke, MA 01040
About Dr. Isaak
Marian Isaak, MD practices internal medicine in Holyoke, MA. The provider's National Provider Identifier (NPI) is 1083340004.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (413) 534-2500
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
575 BEECH ST
Holyoke, MA 01040
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 internists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
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 — 22 related providers in 3 groups
Other internists in Holyoke 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Isaak?
Dr. Isaak is an internist in Holyoke, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Dr. Isaak's address?
Dr. Isaak is listed at 575 Beech St, Holyoke, MA 01040. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Isaak?
The number on file is (413) 534-2500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Isaak's NPI number?
Dr. Isaak's National Provider Identifier is 1083340004. 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
Where did Dr. Isaak train?
Dr. Isaak attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Isaak been practicing?
Dr. Isaak has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Isaak confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Isaak. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.