Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John Alexander Co, MD

Individual provider Cardiovascular Disease Physician · NPI 1588620199

John Alexander Co, MD is a Cardiovascular Disease (Cardiology) in Ridgewood, New Jersey. Qualified in 1983, 43 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
43
Licensed in
NJ
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

140 Chestnut St Ste 202
Ridgewood, NJ 07450-2599
Phone: (201) 445-0405
Fax: (201) 445-4282
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence MA52567 (NJ)

Record details

NPI number1588620199
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 22, 2006
Last updated in NPPESNovember 28, 2012
Mailing address140 Chestnut St, Suite 202, Ridgewood, NJ 07450

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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