Dr. Alan K. Felsen, MD
- Medicare services, 2020
- 58
- Part D claims, 2024
- 152
- Industry payments
- $214
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 15 Anderson St, Hackensack, NJ 07601-4508
- Practice phone
- Call (201) 487-3355
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Internal Medicine Associates Of Bergen County
Primary care practice · Hackensack, New Jersey
Find Dr. Felsen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Alan K. Felsen is an internist in Paramus, New Jersey
Dr. Felsen practices at Internal Medicine Associates Of Bergen County in Hackensack, New Jersey.
Dr. Felsen's NPI, 1619979317, was assigned on August 11, 2005. Dr. Felsen graduated from Icahn School Of Medicine At Mount Sinai in 1974. Dr. Felsen holds New Jersey license 25MA03327000.
- NPI
- 1619979317NPI Registry (opens in a new tab)
- NPI enumeration date
- August 11, 2005
- NPI status
- Active
- Practice phone
- (201) 487-3355
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alan K. Felsen practices in Hackensack and Paramus
Dr. Felsen's primary practice is Internal Medicine Associates of Bergen County, at 15 Anderson St, Hackensack, NJ 07601-4508. The practice phone is (201) 487-3355. The NPI Registry lists Dr. Felsen's practice address as 4 Valley Health Plz, Paramus, NJ 07652.
- Internal Medicine Associates of Bergen CountyPrimary15 Anderson St, Hackensack, NJ 07601-4508Phone(201) 487-3355
- NPI Registry address4 Valley Health Plz, Paramus, NJ 07652 · Bergen CountyPhone(201) 487-3355
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Alan K. Felsen is affiliated with 1 site of care and 1 medical group
Dr. Felsen's primary practice is Internal Medicine Associates Of Bergen County in Hackensack, New Jersey. Dmand AI also links Dr. Felsen to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Alan K. Felsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Felsen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Internal Medicine Associates Of Bergen County | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alan K. Felsen is one of 4,226 internists in New Jersey
Internal medicine is Dr. Felsen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Felsen is licensed in New Jersey.
Specialties and state licenses
- Internal medicine, New JerseyPrimary
Internists near Dr. Felsen
Counts of internists 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. Alan K. Felsen billed Medicare for 58 services in 2020
CMS data shows 58 Medicare services from Dr. Felsen across 3 procedure codes in 2020. Medicare paid $3,875 for them. Every service was in an office.
Dr. Felsen's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Other services
- 2019: 822020: 2174%
- Office and hospital visits
- 2019: 3572020: 2194%
- Tests and treatments
- 2019: 702020: 1677%
Dr. Felsen compared with the New Jersey median for internists, 2020
- Dr. Felsen
- New Jersey median
- Medicare services
- 58vs 72392% below
- Part D claims
- 138vs 83083% below
Medians across 4,086 internists in New Jersey with Dmand AI profiles that report each measure.
Dr. Felsen's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Felsen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Felsen and other internists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alan K. Felsen's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Felsen's median patient age at 70, with 48% women.
Dr. Felsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women48%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Alan K. Felsen wrote 152 Medicare Part D claims in 2024
In 2024, Dr. Felsen wrote 152 Medicare Part D claims for 19 patients. CMS names the drug for 138 of them, across 5 drugs with 11 or more claims each, at $93,742 in total drug cost. In 2020, CMS named 393 claims across 21 drugs.
Dr. Felsen'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. Felsen's Part D claims, 2024
- Antipsychotics, patients 65 and over10%15 of 152 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 3932024: 13865%
Drugs named by CMS: 5 in 2024, 21 in 2020.
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
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Dr. Alan K. Felsen received $214 in industry payments from 2016 to 2019
CMS Open Payments shows 15 general payments to Dr. Felsen from 7 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $58.
General payments to Dr. Felsen by program year, 2016 to 2019
Companies that paid Dr. Felsen the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alan K. Felsen graduated from Icahn School Of Medicine At Mount Sinai
Dr. Felsen graduated from Icahn School Of Medicine At Mount Sinai in 1974.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alan K. Felsen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alan K. Felsen
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. Alan K. Felsen's NPI number?
Dr. Alan K. Felsen's NPI number is 1619979317. It was assigned on August 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alan K. Felsen?
Dr. Alan K. Felsen is an internist in Paramus, New Jersey. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Alan K. Felsen practice?
Dr. Felsen practices at 15 Anderson St, Hackensack, NJ 07601-4508. Dr. Felsen also practices at 4 Valley Health Plz, Paramus, NJ 07652. Dr. Felsen's primary practice is Internal Medicine Associates Of Bergen County in Hackensack, New Jersey. Dmand AI also links Dr. Felsen to 1 medical group.
What is Dr. Alan K. Felsen's office phone number?
The practice phone on file for Dr. Felsen is (201) 487-3355.
What is Dr. Alan K. Felsen's medical license number?
Dr. Felsen holds New Jersey license 25MA03327000.
Does Dr. Alan K. Felsen accept Medicare?
Yes. CMS data shows Dr. Felsen billed Medicare for 58 services in 2020.
What services does Dr. Alan K. Felsen bill to Medicare?
In 2020, Dr. Felsen's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and heart test or procedure (93000).
Where did Dr. Alan K. Felsen go to medical school?
Dr. Felsen graduated from Icahn School Of Medicine At Mount Sinai in 1974.
What drugs does Dr. Alan K. Felsen prescribe most?
In 2024 Medicare Part D data, Dr. Felsen's most prescribed drugs by claims were Linzess, Eliquis and Entresto.
Has Dr. Alan K. Felsen received payments from drug or device companies?
CMS Open Payments shows $214 in general payments to Dr. Felsen from 7 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. Alan K. Felsen been practicing?
Dr. Felsen graduated from medical school in 1974, 52 years ago.
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