Dr. Nathaniel Johnson, MD
- Medicare services, 2024
- 479
- Medicare patients, 2024
- 166
- Part D claims, 2024
- 969
- MIPS score, 2024
- 98
- Hospital affiliations
- 1
- Practice address
- 22 Bramhall St, Portland, ME 04102
- Practice phone
- Call (207) 662-0111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnson'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. Nathaniel Johnson is a urologist in Portland, Maine
Dr. Johnson practices at MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth.
Dr. Johnson's NPI, 1578925715, was assigned on March 27, 2016. Dr. Johnson graduated from Tufts University School of Medicine in 2016. Dr. Johnson holds Maine license MD24828.
- NPI
- 1578925715NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426342205
- NPI enumeration date
- March 27, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (207) 662-0111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathaniel Johnson practices at MaineHealth Maine Medical Center in Portland, Maine
Dr. Johnson's primary practice is MaineHealth Maine Medical Center, at 22 Bramhall St, Portland, ME 04102 in Cumberland County. The practice phone is (207) 662-0111.
- MaineHealth Maine Medical Center22 Bramhall St, Portland, ME 04102 · Cumberland CountyPhone(207) 662-0111
Source: Dmand AI Affiliation Data
Dr. Nathaniel Johnson is affiliated with 2 sites of care and 2 medical groups
Dr. Johnson's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Dr. Johnson to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathaniel Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MaineHealth Maine Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across MaineHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nathaniel Johnson is one of 68 urologists in Maine
Urology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dmand AI has Dr. Johnson's licenses on file in 2 states: Maine and Vermont.
Specialties and state licenses
- Urology, MainePrimary
- Student in an organized health care education/training program, Vermont
Urologists near Dr. Johnson
Counts of urologists 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. Nathaniel Johnson billed Medicare for 479 services in 2024
CMS data shows 479 Medicare services from Dr. Johnson across 10 procedure codes in 2024, for 166 Medicare patients. Medicare paid $41,256 for them.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2242024: 2154%
- Surgery
- 2023: 1892024: 16413%
- Lab and pathology
- 2023: 1132024: 8921%
- Other services
- 2023: 02024: 11
- Imaging
- 2023: 342024: 0100%
Where Dr. Johnson's Medicare services took place, 2024
- In an office46697%
- In a facility133%
Dr. Johnson compared with the Maine median for urologists, 2024
- Dr. Johnson
- Maine median
- Medicare services
- 479vs 33443% above
- Medicare patients
- 166vs 23830% below
- Part D claims
- 884vs 45495% above
Medians across 72 urologists in Maine with Dmand AI profiles that report each measure.
Dr. Johnson'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.
Need commercial claims for Dr. Johnson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other urologists in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathaniel Johnson treated 166 Medicare patients in 2024, average age 76
CMS counts 166 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.58, 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. Johnson's median patient age at 72, with 31% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women4024%
- Men12676%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes47%
- Chronic kidney disease37%
- Ischemic heart disease37%
- Atrial fibrillation30%
- Anxiety27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women31%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathaniel Johnson wrote 969 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 969 Medicare Part D claims for 249 patients. 92% of them were for generic drugs. CMS names the drug for 884 of them, across 17 drugs with 11 or more claims each, at $73,699 in total drug cost. In 2023, CMS named 744 claims across 16 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic895 claims92%
- Brand-name74 claims8%
Dr. Johnson'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. Johnson's Part D claims, 2024
- Opioids5%45 of 969 claims
- Antibiotics13%130 of 969 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: 7442024: 88419%
Drugs named by CMS: 17 in 2024, 16 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
Dr. Nathaniel Johnson scored 98 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Dr. Johnson for performance year 2024, reported through an alternative payment model (APM). Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Johnson's MIPS scores, performance year 2024
- 98of 100Final score
- 83.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Prostate resection: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Nathaniel Johnson received $389 in industry payments from 2021 to 2025
CMS Open Payments shows 6 general payments to Dr. Johnson from 4 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Calyxo, Inc. paid the most, $143.
General payments to Dr. Johnson by program year, 2021 to 2025
Companies that paid Dr. Johnson the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathaniel Johnson graduated from Tufts University School of Medicine
Dr. Johnson graduated from Tufts University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathaniel Johnson'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 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) |
| 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Nathaniel Johnson
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. Nathaniel Johnson's NPI number?
Dr. Nathaniel Johnson's NPI number is 1578925715. It was assigned on March 27, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathaniel Johnson?
Dr. Nathaniel Johnson is a urologist in Portland, Maine. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Nathaniel Johnson practice?
Dr. Johnson practices at 22 Bramhall St, Portland, ME 04102. Dr. Johnson's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dmand AI also links Dr. Johnson to 1 group practice or clinic and 1 medical group.
What is Dr. Nathaniel Johnson's office phone number?
The practice phone on file for Dr. Johnson is (207) 662-0111.
What is Dr. Nathaniel Johnson's medical license number?
Dr. Johnson holds Maine license MD24828, one of the licenses on file in 2 states.
Which states has Dr. Nathaniel Johnson been licensed in?
Dmand AI has state licenses on file for Dr. Johnson in Maine and Vermont.
Which hospitals is Dr. Nathaniel Johnson affiliated with?
Dr. Johnson practices at MaineHealth Maine Medical Center in Portland, Maine.
What medical group is Dr. Nathaniel Johnson part of?
Dr. Johnson is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Dr. Johnson to 1 more medical group.
Does Dr. Nathaniel Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 479 services in 2024, and Dr. Johnson accepts Medicare assignment.
Does Dr. Nathaniel Johnson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johnson as offering telehealth services.
Show 7 more questionsShow fewer questions
What is Dr. Nathaniel Johnson's MIPS score?
Dr. Johnson's MIPS final score for performance year 2024 is 98 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Nathaniel Johnson see?
CMS counts 166 Medicare patients who saw Dr. Johnson in 2024, with an average age of 76.
What services does Dr. Nathaniel Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were office visit, established patient (99214), lab and pathology test (81003) and surgery: urinary system (51798).
Where did Dr. Nathaniel Johnson go to medical school?
Dr. Johnson graduated from Tufts University School of Medicine in 2016.
What drugs does Dr. Nathaniel Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Finasteride, Tamsulosin HCl and Solifenacin Succinate.
Has Dr. Nathaniel Johnson received payments from drug or device companies?
CMS Open Payments shows $389 in general payments to Dr. Johnson from 4 companies from 2021 to 2025. The largest total came from Calyxo, Inc.
How long has Dr. Nathaniel Johnson been practicing?
Dr. Johnson graduated from medical school in 2016, 10 years ago.
Selling to urology practices?
See urologists in Maine by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card