Dr. David Russell Langdon, MD
- Medicare services, 2024
- 4,779
- Medicare patients, 2024
- 3,297
- MIPS score, 2024
- 91
- Hospital affiliations
- 7
- Industry payments
- $941
- Practice address
- 175 Fore River Pkwy, Portland, ME 04102
- Practice phone
- Call (207) 879-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Light Mercy Hospital
Portland, Maine
Find Dr. Langdon's professional email, personal email and mobile number
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Dr. David Russell Langdon is a diagnostic radiologist in Portland, Maine
Dr. Langdon practices at Northern Light Mercy Hospital in Portland, Maine.
Dr. Langdon's NPI, 1083691034, was assigned on December 29, 2005. Dr. Langdon graduated from Boston University School of Medicine in 1991. Dr. Langdon holds Maine license 015259.
- NPI
- 1083691034NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143252775
- NPI enumeration date
- December 29, 2005
- NPI status
- Active
- Practice phone
- (207) 879-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. David Russell Langdon practices at Northern Light Mercy Hospital in Portland, Maine
Dr. Langdon's primary practice is Northern Light Mercy Hospital, at 175 Fore River Pkwy, Portland, ME 04102 in Cumberland County. The practice phone is (207) 879-3000.
- Northern Light Mercy Hospital175 Fore River Pkwy, Portland, ME 04102 · Cumberland CountyPhone(207) 879-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Russell Langdon is affiliated with 14 sites of care and 8 medical groups
Dr. Langdon's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dr. Langdon is also affiliated with Northern Light Mercy Hospital. The medical group on file is Northern Light Mercy Hospital. Dmand AI also links Dr. Langdon to 6 more hospitals, 7 medical groups and 6 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Russell Langdon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Langdon practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Light Mercy Hospital | Available with a free account |
| +13 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Russell Langdon is one of 163 diagnostic radiologists in Maine
Diagnostic radiology is Dr. Langdon's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Langdon is licensed in Maine.
Specialties and state licenses
- Diagnostic radiology, MainePrimary
Diagnostic radiologists near Dr. Langdon
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. David Russell Langdon billed Medicare for 4,779 services in 2024
CMS data shows 4,779 Medicare services from Dr. Langdon across 67 procedure codes in 2024, for 3,297 Medicare patients. Medicare paid $76,707 for them.
Dr. Langdon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 4,4372024: 4,5493%
- Tests and treatments
- 2023: 1892024: 1943%
- Surgery
- 2023: 922024: 3661%
Where Dr. Langdon's Medicare services took place, 2024
- In an office87018%
- In a facility3,90982%
Dr. Langdon compared with the Maine median for diagnostic radiologists, 2024
- Dr. Langdon
- Maine median
- Medicare services
- 4,779vs 2,0742.3 times
- Medicare patients
- 3,297vs 1,65699% above
Medians across 168 diagnostic radiologists in Maine with Dmand AI profiles that report each measure.
Dr. Langdon'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Langdon and other diagnostic radiologists in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Russell Langdon treated 3,297 Medicare patients in 2024, average age 74
CMS counts 3,297 Medicare patients who saw Dr. Langdon in 2024. The largest group is 65 to 74, with 1,230 patients. 68% of them have high blood pressure, and 67% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Langdon's median patient age at 65, with 58% women.
Dr. Langdon's Medicare patients by age, 2024
Dr. Langdon's Medicare patients by sex, 2024
- Women1,91658%
- Men1,38142%
Chronic conditions among Dr. Langdon's Medicare patients, 2024
- High blood pressure68%
- High cholesterol67%
- Arthritis59%
- Anxiety31%
- Mood disorders31%
- Depression27%
- Chronic kidney disease25%
- Diabetes24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Langdon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Russell Langdon scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Langdon for performance year 2024, reported as part of a group.
Dr. Langdon's MIPS scores, performance year 2024
- 91of 100Final score
- 77.9of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. David Russell Langdon received $941 in industry payments from 2016 to 2020
CMS Open Payments shows 14 general payments to Dr. Langdon from 3 drug and device companies from 2016 to 2020. Travel and lodging make up the largest share, 59% of the total. Boston Scientific Corporation paid the most, $895.
General payments to Dr. Langdon by program year, 2016 to 2020
General payments to Dr. Langdon by kind, 2016 to 2020
- Travel and lodging$55459%
- Food and beverage$38741%
Companies that paid Dr. Langdon the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Russell Langdon graduated from Boston University School of Medicine
Dr. Langdon graduated from Boston University School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Russell Langdon'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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. David Russell Langdon
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. David Russell Langdon's NPI number?
Dr. David Russell Langdon's NPI number is 1083691034. It was assigned on December 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. David Russell Langdon?
Dr. David Russell Langdon is a diagnostic radiologist in Portland, Maine. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. David Russell Langdon practice?
Dr. Langdon practices at 175 Fore River Pkwy, Portland, ME 04102. Dr. Langdon's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dmand AI also links Dr. Langdon to 6 hospitals, 7 medical groups and 6 group practices and clinics.
What is Dr. David Russell Langdon's office phone number?
The practice phone on file for Dr. Langdon is (207) 879-3000.
What is Dr. David Russell Langdon's medical license number?
Dr. Langdon holds Maine license 015259.
Which hospitals is Dr. David Russell Langdon affiliated with?
Dr. Langdon is affiliated with Northern Light Mercy Hospital. Dmand AI links Dr. Langdon to 6 more hospitals.
What medical group is Dr. David Russell Langdon part of?
Dr. Langdon is linked to Northern Light Mercy Hospital. Dmand AI links Dr. Langdon to 7 more medical groups.
Does Dr. David Russell Langdon accept Medicare?
Yes. CMS data shows Dr. Langdon billed Medicare for 4,779 services in 2024.
What is Dr. David Russell Langdon's MIPS score?
Dr. Langdon's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. David Russell Langdon see?
CMS counts 3,297 Medicare patients who saw Dr. Langdon in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. David Russell Langdon bill to Medicare?
In 2024, Dr. Langdon's most billed Medicare services were diagnostic imaging (71046), diagnostic imaging (71045) and diagnostic imaging (73502).
Where did Dr. David Russell Langdon go to medical school?
Dr. Langdon graduated from Boston University School of Medicine in 1991.
Has Dr. David Russell Langdon received payments from drug or device companies?
CMS Open Payments shows $941 in general payments to Dr. Langdon from 3 companies from 2016 to 2020. The largest total came from Boston Scientific Corporation.
How long has Dr. David Russell Langdon been practicing?
Dr. Langdon graduated from medical school in 1991, 35 years ago.
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