Dr. Carmelo S. Mejia, MD
- Medicare services, 2023
- 12
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 11,016
- Industry payments
- $109
- Affiliated sites
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
Find Dr. Mejia's professional email, personal email and mobile number
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Dr. Carmelo S. Mejia is an internist in Portland, Oregon
Dr. Mejia practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. Mejia's NPI, 1346468451, was assigned on April 23, 2007. Dr. Mejia holds Oregon license MD 20677.
- NPI
- 1346468451NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153402318
- NPI enumeration date
- April 23, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Carmelo S. Mejia practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. Mejia's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Carmelo S. Mejia is affiliated with 2 sites of care and 1 medical group
Dr. Mejia's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Mejia to 1 more ambulatory surgery center, 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. Carmelo S. Mejia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mejia practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | 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. Carmelo S. Mejia is one of 1,680 internists in Oregon
Internal medicine is Dr. Mejia's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mejia is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Mejia
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. Carmelo S. Mejia billed Medicare for 12 services in 2023
CMS data shows 12 Medicare services from Dr. Mejia across 1 procedure code in 2023, all of them office visits, for 12 Medicare patients. Medicare paid $402 for them. Every service was in an office.
Dr. Mejia's Medicare services by type, 2017 to 2023
- 2017
- 2023
- Office and hospital visits
- 2017: 162023: 1225%
Dr. Mejia compared with the Oregon median for internists, 2023
- Dr. Mejia
- Oregon median
- Medicare services
- 12vs 30096% below
- Medicare patients
- 12vs 13291% below
- Part D claims
- 10,498vs 22247.3 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Mejia's most billed Medicare procedure codes, 2023
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. Mejia and other internists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carmelo S. Mejia treated 12 Medicare patients in 2024, average age 66
CMS counts 12 Medicare patients who saw Dr. Mejia in 2024. Their average risk score is 2.44, 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. Mejia's median patient age at 55, with 56% women.
Dr. Mejia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Carmelo S. Mejia wrote 11,016 Medicare Part D claims in 2024
In 2024, Dr. Mejia wrote 11,016 Medicare Part D claims for 821 patients. 92% of them were for generic drugs. CMS names the drug for 10,498 of them, across 135 drugs with 11 or more claims each, at $311,450 in total drug cost. In 2023, CMS named 9,621 claims across 126 drugs.
Dr. Mejia's Part D claims by kind of drug, 2024
- Generic10,088 claims92%
- Brand-name817 claims7%
- Other111 claims1%
Dr. Mejia'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. Mejia's Part D claims, 2024
- Opioids7%825 of 11,016 claims
- Antibiotics1%92 of 11,016 claims
- Antipsychotics, patients 65 and over0%44 of 11,016 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: 9,6212024: 10,4989%
Drugs named by CMS: 135 in 2024, 126 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. Carmelo S. Mejia takes part in Medicare
Dr. Mejia 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. Carmelo S. Mejia received $109 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Mejia from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Sumitomo Pharma America, Inc. paid the most, $109.
Companies that paid Dr. Mejia the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Carmelo S. Mejia'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) |
| 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) |
| 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. Carmelo S. Mejia
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. Carmelo S. Mejia's NPI number?
Dr. Carmelo S. Mejia's NPI number is 1346468451. It was assigned on April 23, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Carmelo S. Mejia?
Dr. Carmelo S. Mejia is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Carmelo S. Mejia practice?
Dr. Mejia practices at 500 NE Multnomah St, Portland, OR 97232. Dr. Mejia's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. Mejia to 1 ambulatory surgery center.
What is Dr. Carmelo S. Mejia's office phone number?
The practice phone on file for Dr. Mejia is (503) 813-2440.
What is Dr. Carmelo S. Mejia's medical license number?
Dr. Mejia holds Oregon license MD 20677.
What medical group is Dr. Carmelo S. Mejia part of?
Dr. Mejia is linked to Kaiser Permanente Northwest.
Does Dr. Carmelo S. Mejia accept Medicare?
Yes. CMS data shows Dr. Mejia billed Medicare for 12 services in 2023, and Dr. Mejia accepts Medicare assignment.
How many Medicare patients does Dr. Carmelo S. Mejia see?
CMS counts 12 Medicare patients who saw Dr. Mejia in 2024, with an average age of 66.
What services does Dr. Carmelo S. Mejia bill to Medicare?
In 2023, Dr. Mejia's most billed Medicare services were office visit, established patient (99213).
What drugs does Dr. Carmelo S. Mejia prescribe most?
In 2024 Medicare Part D data, Dr. Mejia's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Simvastatin.
Has Dr. Carmelo S. Mejia received payments from drug or device companies?
CMS Open Payments shows $109 in general payments to Dr. Mejia from 1 company from 2025 to 2025. The largest total came from Sumitomo Pharma America, Inc.
How long has Dr. Carmelo S. Mejia been practicing?
Dr. Mejia graduated from medical school in 1988, 38 years ago.
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