Dr. Donald Joseph Langan Jr., MD, PharmD
- Part D claims, 2024
- 152
- Publications
- 1
- Hospital affiliations
- 2
- Industry payments
- $10,333
- Medical group
- 1
- Practice address
- 100 Madison Ave, Morristown, NJ 07962
- Practice phone
- Call (973) 971-5450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Langan'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. Donald Joseph Langan Jr. is a neurologist in Morristown, New Jersey
Dr. Langan practices at Morristown Medical Center in Morristown, New Jersey, part of Atlantic Health System.
Dr. Langan's NPI, 1104282631, was assigned on January 13, 2016. Dr. Langan graduated from Rutgers Robert Wood Johnson Medical School in 2020. Dr. Langan holds New York license 313762.
- NPI
- 1104282631NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769924612
- NPI enumeration date
- January 13, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (973) 971-5450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Donald Joseph Langan Jr. practices at Morristown Medical Center in Morristown, New Jersey
Dr. Langan's primary practice is Morristown Medical Center, at 100 Madison Ave, Morristown, NJ 07962 in Morris County. The practice phone is (973) 971-5450.
- Morristown Medical Center100 Madison Ave, Morristown, NJ 07962 · Morris CountyPhone(973) 971-5450
Source: Dmand AI Affiliation Data
Dr. Donald Joseph Langan Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Langan's primary practice is Morristown Medical Center in Morristown, New Jersey, part of Atlantic Health System. Dr. Langan is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is ColumbiaDoctors.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Donald Joseph Langan Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Langan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Morristown Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Donald Joseph Langan Jr. is one of 607 neurologists in New Jersey
Neurology is Dr. Langan's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Langan's licenses on file in 2 states: New York and New Jersey.
Specialties and state licenses
- Neurology, New YorkPrimary
- Pharmacist, New Jersey
Neurologists near Dr. Langan
Counts of neurologists 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. Donald Joseph Langan Jr.'s patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Langan's median patient age at 51, with 67% women.
Dr. Langan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women67%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. Donald Joseph Langan Jr. wrote 152 Medicare Part D claims in 2024
In 2024, Dr. Langan wrote 152 Medicare Part D claims for 44 patients. 82% of them were for generic drugs. CMS names the drug for 42 of them, across 3 drugs with 11 or more claims each, at $15,908 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Langan's Part D claims by kind of drug, 2024
- Generic124 claims82%
- Brand-name28 claims18%
Dr. Langan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 122024: 42250%
Drugs named by CMS: 3 in 2024, 1 in 2023.
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. Donald Joseph Langan Jr. takes part in Medicare
Dr. Langan 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. Donald Joseph Langan Jr. has 1 publication on record
Dmand AI links 1 paper to Dr. Langan in 2023. Dr. Langan's most frequent co-authors are Ulrike W. Kaunzner, MD, PhD and Nara Miriam Michaelson, MD, MS.
Dr. Langan's most frequent co-authors
Recent publications by Dr. Langan
See who Dr. Langan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Langan works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Donald Joseph Langan Jr. received $10,333 in industry payments from 2023 to 2025
CMS Open Payments shows 46 general payments to Dr. Langan from 7 drug and device companies from 2023 to 2025. Consulting fees make up the largest share, 73% of the total. Genentech, Inc. paid the most, $8,959.
General payments to Dr. Langan by program year, 2023 to 2025
General payments to Dr. Langan by kind, 2023 to 2025
- Consulting fees$7,57573%
- Food and beverage$1,74417%
- Travel and lodging$9589%
- Education$561%
Companies that paid Dr. Langan the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Donald Joseph Langan Jr. graduated from Rutgers Robert Wood Johnson Medical School
Dr. Langan graduated from Rutgers Robert Wood Johnson Medical School in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Donald Joseph Langan Jr.'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Donald Joseph Langan Jr.
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. Donald Joseph Langan Jr.'s NPI number?
Dr. Donald Joseph Langan Jr.'s NPI number is 1104282631. It was assigned on January 13, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Donald Joseph Langan Jr.?
Dr. Donald Joseph Langan Jr. is a neurologist in Morristown, New Jersey. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Donald Joseph Langan Jr. practice?
Dr. Langan practices at 100 Madison Ave, Morristown, NJ 07962. Dr. Langan's primary practice is Morristown Medical Center in Morristown, New Jersey, part of Atlantic Health System.
What is Dr. Donald Joseph Langan Jr.'s office phone number?
The practice phone on file for Dr. Langan is (973) 971-5450.
What is Dr. Donald Joseph Langan Jr.'s medical license number?
Dr. Langan holds New York license 313762, one of the licenses on file in 2 states.
Which states has Dr. Donald Joseph Langan Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Langan in New York and New Jersey.
Which hospitals is Dr. Donald Joseph Langan Jr. affiliated with?
Dr. Langan practices at Morristown Medical Center in Morristown, New Jersey. Dr. Langan is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center.
What medical group is Dr. Donald Joseph Langan Jr. part of?
Dr. Langan is linked to ColumbiaDoctors.
Does Dr. Donald Joseph Langan Jr. accept Medicare?
Yes. CMS lists Dr. Langan as accepting Medicare assignment.
Where did Dr. Donald Joseph Langan Jr. go to medical school?
Dr. Langan graduated from Rutgers Robert Wood Johnson Medical School in 2020.
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What drugs does Dr. Donald Joseph Langan Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Langan's most prescribed drugs by claims were Gabapentin, Topiramate and Nurtec ODT.
Has Dr. Donald Joseph Langan Jr. received payments from drug or device companies?
CMS Open Payments shows $10,333 in general payments to Dr. Langan from 7 companies from 2023 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Donald Joseph Langan Jr. been practicing?
Dr. Langan graduated from medical school in 2020, 6 years ago.
Does Dr. Donald Joseph Langan Jr. do research?
Dmand AI links 1 publication to Dr. Langan.
Who does Dr. Donald Joseph Langan Jr. publish with?
Dr. Langan's most frequent co-authors are Ulrike W. Kaunzner, MD, PhD (1 shared paper) and Nara Miriam Michaelson, MD, MS (1 shared paper).
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