Dr. John A. Long Jr., MD
- Medicare services, 2020
- 57
- Industry payments
- $29
- Affiliated sites
- 1
- Medical group
- 1
- State licenses
- 3
- Practice address
- 10810 Connecticut Ave, Kensington, MD 20895-2138
- Practice phone
- Call (301) 929-7100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente
Multi-specialty group site · Kensington, Maryland
Find Dr. Long'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. John A. Long Jr. is a diagnostic radiologist in Kensington, Maryland
Dr. Long practices at Kaiser Permanente in Kensington, Maryland.
Dr. Long's NPI, 1821062704, was assigned on February 15, 2006. Dr. Long holds Maryland license D22299.
- NPI
- 1821062704NPI Registry (opens in a new tab)
- NPI enumeration date
- February 15, 2006
- NPI status
- Active
- Practice phone
- (301) 929-7100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Long Jr. practices at Kaiser Permanente in Kensington, Maryland
Dr. Long's primary practice is Kaiser Permanente, at 10810 Connecticut Ave, Kensington, MD 20895-2138. The practice phone is (301) 929-7100.
- Kaiser Permanente10810 Connecticut Ave, Kensington, MD 20895-2138Phone(301) 929-7100
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Long Jr. is affiliated with 1 site of care and 1 medical group
Dr. Long's primary practice is Kaiser Permanente in Kensington, Maryland. The medical group on file is Mid-Atlantic Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. John A. Long Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Long practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John A. Long Jr. is one of 626 diagnostic radiologists in Maryland
Diagnostic radiology is Dr. Long's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Long's licenses on file in 3 states: Maryland, District of Columbia and Virginia.
Specialties and state licenses
- Diagnostic radiology, MarylandPrimary
- District of Columbia license
- Virginia license
Diagnostic radiologists near Dr. Long
Counts of diagnostic radiologists 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. John A. Long Jr. billed Medicare for 57 services in 2020
CMS data shows 57 Medicare services from Dr. Long across 3 procedure codes in 2020. Medicare paid $6,575 for them. Every service was in an office.
Dr. Long's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Imaging
- 2019: 902020: 5737%
Dr. Long compared with the Maryland median for diagnostic radiologists, 2020
- Dr. Long
- Maryland median
- Medicare services
- 57vs 5,24199% below
Medians across 602 diagnostic radiologists in Maryland with Dmand AI profiles that report each measure.
Dr. Long'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Long and other diagnostic radiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. John A. Long Jr. received $29 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Long from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Phathom Pharmaceuticals, Inc. paid the most, $29.
Companies that paid Dr. Long the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John A. Long 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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. John A. Long 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. John A. Long Jr.'s NPI number?
Dr. John A. Long Jr.'s NPI number is 1821062704. It was assigned on February 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Long Jr.?
Dr. John A. Long Jr. is a diagnostic radiologist in Kensington, Maryland. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John A. Long Jr. practice?
Dr. Long practices at 10810 Connecticut Ave, Kensington, MD 20895-2138. Dr. Long's primary practice is Kaiser Permanente in Kensington, Maryland.
What is Dr. John A. Long Jr.'s office phone number?
The practice phone on file for Dr. Long is (301) 929-7100.
What is Dr. John A. Long Jr.'s medical license number?
Dr. Long holds Maryland license D22299, one of the licenses on file in 3 states.
Which states has Dr. John A. Long Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Long in Maryland, District of Columbia and Virginia.
What medical group is Dr. John A. Long Jr. part of?
Dr. Long is linked to Mid-Atlantic Permanente Medical Group.
Does Dr. John A. Long Jr. accept Medicare?
Yes. CMS data shows Dr. Long billed Medicare for 57 services in 2020.
What services does Dr. John A. Long Jr. bill to Medicare?
In 2020, Dr. Long's most billed Medicare services were radiation oncology (77067), diagnostic imaging (71046) and radiation oncology (77063).
Has Dr. John A. Long Jr. received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Dr. Long from 1 company from 2024 to 2024. The largest total came from Phathom Pharmaceuticals, Inc.
How long has Dr. John A. Long Jr. been practicing?
Dr. Long's NPI was assigned in 2006.
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