JONATHAN ALEXANDER (M.D.) – Cardiovascular Disease Physician, NPI 1710921754

JONATHAN ALEXANDER (M.D.) is a healthcare provider. based in Danbury, Connecticut. specializing in CARDIOVASCULAR DISEASE (CARDIOLOGY). They hold the professional credentials M.D.. They hold a License No. 018828 (CT). The NPI Number for JONATHAN ALEXANDER (M.D.) is 1710921754

Main info

Male
53 Years Of Experience
Name
JONATHAN ALEXANDER (M.D.)
NPI
1710921754
Phone
(203) 797-7379
Address
24 HOSPITAL AVE
Enumeration Date
16 June 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
HARVARD MEDICAL SCHOOL
Secondary Phone
-
Graduation Year
1973 (53 years ago)
PAC ID
1658435854
Professional Enrollment ID
I20090203000558
Address ID
CT068100000DA111XXSTXX300
Telehealth
Yes
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

669 CARDIOVASCULAR DISEASE (CARDIOLOGY) in CT

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Provider Addresses for JONATHAN ALEXANDER (M.D.)

  • Danbury Hospital, 24, Hospital Avenue, Germantown, Danbury, Fairfield County, Connecticut, 06810, United States

    DANBURY, CT 068106099

    Phone: (203) 797-7379

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 12 Open Payments records for all available years, with a total value of $399.

Total Amount is formed as General ($399) + Research ($0) + Ownership ($0) = $399.

Last reported payment date: 2024-12-17 • Largest payer in this snapshot: E.R. Squibb & Sons, L.L.C. ($172).

Total Amount

$399

General + Research + Ownership

Payments

12

Total payment records

General Amount

$399

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-12-17

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2009-02-03

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20090203000558ICardiovascular Disease (Cardiology)CTTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99214Established patient office or other outpatient visit, 30-39 minutes1,016483$0
93010Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only494438$0
93000Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report357286$0
93018Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician111111$0
99442Telephone medical discussion with physician, 11-20 minutes11085$0
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Insurance plans in this area (ZIP 06810)

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Provider's Procedures

JONATHAN ALEXANDER (M.D.) performs procedures in CARDIOVASCULAR DISEASE (CARDIOLOGY). See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
CARDIOVASCULAR DISEASE (CARDIOLOGY)CT78452Nuclear medicine study of vessels of heart using drugs or exercise multiple studies1919

Reviews

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Frequently asked questions

What is the 10-digit NPI for JONATHAN ALEXANDER (M.D.)?
JONATHAN ALEXANDER (M.D.) — NPI 1710921754 — is the standard way to identify this listing.
Does the file indicate JONATHAN ALEXANDER (M.D.) is practicing under active NPI?
Directory data currently reports JONATHAN ALEXANDER (M.D.) as active.
What taxonomy line describes JONATHAN ALEXANDER (M.D.)?
For research purposes, treat JONATHAN ALEXANDER (M.D.) as Cardiovascular Disease Physician in this dataset. Clinical services aligned with this taxonomy classification.
Where should I expect JONATHAN ALEXANDER (M.D.) on a map?
Expect Danbury, Connecticut as a primary anchor for JONATHAN ALEXANDER (M.D.) unless the record lists multiple sites.
How many locations tie to this NPI?
2 practice locations appear in the available data.

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