J Am Geriatr Soc
Bone DensityBone Density Conservation AgentsDiphosphonates
Dr. Marcia G. Ko, MD
NPI1871577114
- Medicare services, 2020
- 468
- Part D claims, 2021
- 187
- Publications
- 11
- Industry payments
- $1,025
- State license
- 1
- Practice address
- 13737 N 92nd St, Scottsdale, AZ 85260
- Practice phone
- Call (480) 301-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
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Dr. Marcia G. Ko is an internist in Scottsdale, Arizona
Dr. Ko practices in Scottsdale, Arizona.
Dr. Ko's NPI, 1871577114, was assigned on November 30, 2005. Dr. Ko holds Arizona license 12181.
NPI and contact details
- NPI
- 1871577114NPI Registry (opens in a new tab)
- NPI enumeration date
- November 30, 2005
- NPI status
- Active
- Practice phone
- (480) 301-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Marcia G. Ko's practice address is in Scottsdale, Arizona
Dr. Ko's practice address in the NPI Registry is 13737 N 92nd St, Scottsdale, AZ 85260. The practice phone is (480) 301-8000.
- NPI Registry address13737 N 92nd St, Scottsdale, AZ 85260Phone(480) 301-8000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Marcia G. Ko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ko practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Ko's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marcia G. Ko is one of 2,420 internists in Arizona
Internal medicine is Dr. Ko's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ko is licensed in Arizona.
Specialties and state licenses
- Internal medicine, ArizonaPrimary
Internists near Dr. Ko
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. Marcia G. Ko billed Medicare for 468 services in 2020
CMS data shows 468 Medicare services from Dr. Ko across 6 procedure codes in 2020. Medicare paid $28,492 for them. Every service was in an office.
Medicare services, 2020468
Paid by Medicare$28,492
Procedure codes6
Dr. Ko's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 6762020: 46831%
- Tests and treatments
- 2019: 672020: 0100%
- Other services
- 2019: 682020: 0100%
Dr. Ko compared with the Arizona median for internists, 2020
- Dr. Ko
- Arizona median
- Medicare services
- 468vs 476Close to median
- Part D claims
- 187vs 26028% below
Medians across 2,300 internists in Arizona with Dmand AI profiles that report each measure.
Dr. Ko'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.
Need commercial claims for Dr. Ko?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ko and other internists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marcia G. Ko's patients have a median age of 83
Across all payers, Dmand AI patient panel data puts Dr. Ko's median patient age at 83, with 70% women.
Dr. Ko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 83
Patient panel by sex, all payers
- Women70%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. Marcia G. Ko wrote 187 Medicare Part D claims in 2021
In 2021, Dr. Ko wrote 187 Medicare Part D claims. Every claim was for a generic drug. They cover 10 drugs, with $3,962 in total drug cost. In 2020, CMS named 2,566 claims across 72 drugs.
Part D claims, 2021187
Drugs named by CMS10
Total drug cost$3,962
Dr. Ko's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 2,5662021: 18793%
Drugs named by CMS: 10 in 2021, 72 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Marcia G. Ko has 11 publications on record
Dmand AI links 11 papers to Dr. Ko, published from 2011 to 2017. 2012 was the busiest year, with 2. The most frequent topics are Faculty, Medical, Bone Density and Career Mobility. Dr. Ko has published most often in Mayo Clin Proc. Dr. Ko's most frequent co-authors are Julia A. Files, MD, Anita P. Mayer, MD and Janis E. Blair, MD.
Papers11
Years published2011 to 2017
Dr. Ko's papers by year, 2011 to 2017
Topics Dr. Ko writes about most
- Faculty, Medical
- Bone Density
- Career Mobility
- Estrogen Replacement Therapy
- Job Satisfaction
- Mentors
- Minnesota
- Osteoporotic Fractures
Dr. Ko's most frequent co-authors
Recent publications by Dr. Ko
J Womens Health (Larchmt)
ArizonaFaculty, MedicalLanguage
Migraine DisordersPain Measurement
Faculty, MedicalJob SatisfactionMentors
See who Dr. Ko researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ko works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marcia G. Ko received $1,025 in industry payments from 2016 to 2021
CMS Open Payments shows 10 general payments to Dr. Ko from 7 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $202.
General payments to Dr. Ko by program year, 2016 to 2021
Companies that paid Dr. Ko the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marcia G. Ko'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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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. Marcia G. Ko
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. Marcia G. Ko's NPI number?
Dr. Marcia G. Ko's NPI number is 1871577114. It was assigned on November 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Marcia G. Ko?
Dr. Marcia G. Ko is an internist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marcia G. Ko practice?
Dr. Ko practices at 13737 N 92nd St, Scottsdale, AZ 85260.
What is Dr. Marcia G. Ko's office phone number?
The practice phone on file for Dr. Ko is (480) 301-8000.
What is Dr. Marcia G. Ko's medical license number?
Dr. Ko holds Arizona license 12181.
Does Dr. Marcia G. Ko accept Medicare?
Yes. CMS data shows Dr. Ko billed Medicare for 468 services in 2020.
What services does Dr. Marcia G. Ko bill to Medicare?
In 2020, Dr. Ko's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99211).
What drugs does Dr. Marcia G. Ko prescribe most?
In 2021 Medicare Part D data, Dr. Ko's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Pantoprazole Sodium.
Has Dr. Marcia G. Ko received payments from drug or device companies?
CMS Open Payments shows $1,025 in general payments to Dr. Ko from 7 companies from 2016 to 2021. The largest total came from Abbvie Inc.
How long has Dr. Marcia G. Ko been practicing?
Dr. Ko's NPI was assigned in 2005.
Does Dr. Marcia G. Ko do research?
Dmand AI links 11 publications to Dr. Ko, published from 2011 to 2017.
Who does Dr. Marcia G. Ko publish with?
Dr. Ko's most frequent co-authors are Julia A. Files, MD (7 shared papers), Anita P. Mayer, MD (7 shared papers) and Janis E. Blair, MD (5 shared papers).
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