Dr. Jason L. Greenbaum, MD

  • New Britain, CT
  • Emergency medicine physician
NPI1649205493PAC ID7517963390
Medicare services, 2024
198
Medicare patients, 2024
186
Part D claims, 2024
172
Hospital affiliations
4
Industry payments
$94
Practice address
100 Grand Street, New Britain, CT 06050
Practice phone
Call (860) 224-5011
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

The Hospital of Central Connecticut

Hospital · New Britain, Connecticut

See all 16 affiliations

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Dr. Jason L. Greenbaum is an emergency medicine physician in New Britain, Connecticut

Dr. Greenbaum practices at The Hospital of Central Connecticut in New Britain, Connecticut, part of Hartford HealthCare.

Dr. Greenbaum's NPI, 1649205493, was assigned on July 11, 2006. Dr. Greenbaum holds Connecticut license 44305.

NPI and contact details
Medicare PAC ID
7517963390
NPI enumeration date
July 11, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(860) 224-5011
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Jason L. Greenbaum practices at The Hospital of Central Connecticut in New Britain, Connecticut

Dr. Greenbaum's primary practice is The Hospital of Central Connecticut, at 100 Grand Street, New Britain, CT 06050 in Hartford County. The practice phone is (860) 224-5011.

Source: Dmand AI Affiliation Data

Dr. Jason L. Greenbaum is affiliated with 6 sites of care and 10 medical groups

Dr. Greenbaum's primary practice is The Hospital of Central Connecticut in New Britain, Connecticut, part of Hartford HealthCare. Dr. Greenbaum is also affiliated with Manchester Memorial Hospital. The medical group on file is The Hospital of Central Connecticut. Dmand AI also links Dr. Greenbaum to 2 more hospitals, 9 medical groups and 2 group practices and clinics, each named with a free account.

See all 16 affiliations for Dr. Greenbaum

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Jason L. Greenbaum's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenbaum practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
The Hospital of Central ConnecticutAvailable with a free account
+5 more sites and 9 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Jason L. Greenbaum is one of 683 emergency medicine physicians in Connecticut

Emergency medicine is Dr. Greenbaum's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Greenbaum's licenses on file in 2 states: Connecticut and Michigan.

Specialties and state licenses

  • Emergency medicine, ConnecticutPrimaryLicense 44305 · taxonomy 207P00000X
  • Michigan licenseLicense 4301082237

Emergency medicine physicians near Dr. Greenbaum

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Jason L. Greenbaum billed Medicare for 198 services in 2024

CMS data shows 198 Medicare services from Dr. Greenbaum across 5 procedure codes in 2024, for 186 Medicare patients. Medicare paid $21,234 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024198
Medicare patients186
Paid by Medicare$21,234
Procedure codes5

Dr. Greenbaum's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1622024: 18715%
Tests and treatments
2023: 182024: 1139%

Dr. Greenbaum compared with the Connecticut median for emergency medicine physicians, 2024

  • Dr. Greenbaum
  • Connecticut median
Medicare services
198vs 24319% below
Medicare patients
186vs 25026% below
Part D claims
77vs 4860% above

Medians across 695 emergency medicine physicians in Connecticut with Dmand AI profiles that report each measure.

Dr. Greenbaum's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Greenbaum

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Jason L. Greenbaum treated 186 Medicare patients in 2024, average age 72

CMS counts 186 Medicare patients who saw Dr. Greenbaum in 2024. The largest group is 75 to 84, with 56 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.21, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Greenbaum's median patient age at 46, with 59% women.

Medicare patients, 2024186
Average age72
Average risk score2.21
Also on Medicaid48%

Dr. Greenbaum's Medicare patients by age, 2024

Dr. Greenbaum's Medicare patients by sex, 2024

  • Women10858%
  • Men7842%

Chronic conditions among Dr. Greenbaum's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Anxiety52%
  4. Arthritis52%
  5. Mood disorders51%
  6. Ischemic heart disease45%
  7. Depression43%
  8. Diabetes41%

Share of Medicare patients with each condition. A patient can have several.

Dr. Greenbaum's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 46

Patient panel by sex, all payers

  • Women59%
  • Men39%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Jason L. Greenbaum wrote 172 Medicare Part D claims in 2024

In 2024, Dr. Greenbaum wrote 172 Medicare Part D claims for 126 patients. 94% of them were for generic drugs. CMS names the drug for 77 of them, across 4 drugs with 11 or more claims each, at $390 in total drug cost. In 2023, CMS named 12 claims across 1 drug.

Part D claims, 2024172
Drugs named by CMS4
Total drug cost$390
Part D patients126

Dr. Greenbaum's Part D claims by kind of drug, 2024

  • Generic162 claims94%
  • Brand-name and other10 claims6%

Dr. Greenbaum's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Greenbaum's Part D claims, 2024

  • Opioids14%24 of 172 claims
  • Antibiotics28%48 of 172 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 122024: 77542%

Drugs named by CMS: 4 in 2024, 1 in 2023.

See all prescribing by Dr. Greenbaum

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Jason L. Greenbaum takes part in Medicare

Dr. Greenbaum accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Jason L. Greenbaum received $94 in industry payments from 2017 to 2024

CMS Open Payments shows 5 general payments to Dr. Greenbaum from 2 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $53.

General payments to Dr. Greenbaum by program year, 2017 to 2024

Companies that paid Dr. Greenbaum the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Greenbaum

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Jason L. Greenbaum's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Jason L. Greenbaum

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Jason L. Greenbaum's NPI number?

Dr. Jason L. Greenbaum's NPI number is 1649205493. It was assigned on July 11, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Jason L. Greenbaum?

Dr. Jason L. Greenbaum is an emergency medicine physician in New Britain, Connecticut. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Jason L. Greenbaum practice?

Dr. Greenbaum practices at 100 Grand Street, New Britain, CT 06050. Dr. Greenbaum's primary practice is The Hospital of Central Connecticut in New Britain, Connecticut, part of Hartford HealthCare. Dmand AI also links Dr. Greenbaum to 2 hospitals, 9 medical groups and 2 group practices and clinics.

What is Dr. Jason L. Greenbaum's office phone number?

The practice phone on file for Dr. Greenbaum is (860) 224-5011.

What is Dr. Jason L. Greenbaum's medical license number?

Dr. Greenbaum holds Connecticut license 44305, one of the licenses on file in 2 states.

Which states has Dr. Jason L. Greenbaum been licensed in?

Dmand AI has state licenses on file for Dr. Greenbaum in Connecticut and Michigan.

Which hospitals is Dr. Jason L. Greenbaum affiliated with?

Dr. Greenbaum practices at The Hospital of Central Connecticut in New Britain, Connecticut. Dr. Greenbaum is also affiliated with Manchester Memorial Hospital. Dmand AI links Dr. Greenbaum to 2 more hospitals.

What medical group is Dr. Jason L. Greenbaum part of?

Dr. Greenbaum is linked to The Hospital of Central Connecticut. Dmand AI links Dr. Greenbaum to 9 more medical groups.

Does Dr. Jason L. Greenbaum accept Medicare?

Yes. CMS data shows Dr. Greenbaum billed Medicare for 198 services in 2024, and Dr. Greenbaum accepts Medicare assignment.

How many Medicare patients does Dr. Jason L. Greenbaum see?

CMS counts 186 Medicare patients who saw Dr. Greenbaum in 2024, with an average age of 72.

Show 4 more questionsShow fewer questions

What services does Dr. Jason L. Greenbaum bill to Medicare?

In 2024, Dr. Greenbaum's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and emergency department visit (99283).

What drugs does Dr. Jason L. Greenbaum prescribe most?

In 2024 Medicare Part D data, Dr. Greenbaum's most prescribed drugs by claims were Ondansetron ODT, Oxycodone HCl and Cephalexin.

Has Dr. Jason L. Greenbaum received payments from drug or device companies?

CMS Open Payments shows $94 in general payments to Dr. Greenbaum from 2 companies from 2017 to 2024. The largest total came from Abbvie Inc.

How long has Dr. Jason L. Greenbaum been practicing?

Dr. Greenbaum graduated from medical school in 2002, 24 years ago.

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