Gastrointest Endosc
Biliary FistulaCholecystitis, AcuteEndoscopy, Gastrointestinal
Dr. Patrick Carroll McKenzie, MD
NPI1699112086PAC ID2163722760
- Medicare services, 2017
- 72
- Part D claims, 2024
- 694
- Publications
- 3
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. McKenzie'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. Patrick Carroll McKenzie is an internist in Richmond, California
Dr. McKenzie practices at Richmond Medical Center in Richmond, California.
Dr. McKenzie's NPI, 1699112086, was assigned on May 27, 2013. Dr. McKenzie graduated from VCU School of Medicine in 2013. Dr. McKenzie's Kentucky license number on file is 49426.
NPI and contact details
- NPI
- 1699112086NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163722760
- NPI enumeration date
- May 27, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick Carroll McKenzie practices at Richmond Medical Center in Richmond, California
Dr. McKenzie's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Patrick Carroll McKenzie is affiliated with 3 sites of care and 1 medical group
Dr. McKenzie's primary practice is Richmond Medical Center in Richmond, California. Dr. McKenzie is also affiliated with Walnut Creek Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. McKenzie to 1 more group practice or clinic, named with a free account.
Richmond Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Patrick Carroll McKenzie's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McKenzie practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Patrick Carroll McKenzie is one of 16,751 internists in California
Internal medicine is Dr. McKenzie's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. McKenzie is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. McKenzie's licenses on file in 3 states: Kentucky, California and Utah.
Specialties and state licenses
- Internal medicine, KentuckyPrimary
- California license
- Gastroenterology, Utah
Internists near Dr. McKenzie
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. Patrick Carroll McKenzie billed Medicare for 72 services in 2017
CMS data shows 72 Medicare services from Dr. McKenzie across 3 procedure codes in 2017. Medicare paid $4,750 for them.
Medicare services, 201772
Paid by Medicare$4,750
Procedure codes3
Dr. McKenzie's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 1372017: 7247%
Where Dr. McKenzie's Medicare services took place, 2017
- In an office3143%
- In a facility4157%
Dr. McKenzie compared with the California median for internists, 2017
- Dr. McKenzie
- California median
- Medicare services
- 72vs 36180% below
- Part D claims
- 511vs 42121% above
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. McKenzie's most billed Medicare procedure codes, 2017
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. McKenzie?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McKenzie and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick Carroll McKenzie's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Dr. McKenzie's median patient age at 55, with 59% women.
Dr. McKenzie'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
- Women59%
- Men41%
Source: Dmand AI Patient Panel Data
Dr. Patrick Carroll McKenzie wrote 694 Medicare Part D claims in 2024
In 2024, Dr. McKenzie wrote 694 Medicare Part D claims for 316 patients. 82% of them were for generic drugs. CMS names the drug for 511 of them, across 9 drugs with 11 or more claims each, at $26,851 in total drug cost. In 2023, CMS named 386 claims across 7 drugs.
Part D claims, 2024694
Drugs named by CMS9
Total drug cost$26,851
Part D patients316
Dr. McKenzie's Part D claims by kind of drug, 2024
- Generic572 claims82%
- Brand-name122 claims18%
Dr. McKenzie'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. McKenzie's Part D claims, 2024
- Antibiotics7%47 of 694 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: 3862024: 51132%
Drugs named by CMS: 9 in 2024, 7 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. Patrick Carroll McKenzie offers telehealth to Medicare patients
Dr. McKenzie accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. McKenzie as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Patrick Carroll McKenzie has 3 publications on record
Dmand AI links 3 papers to Dr. McKenzie, published from 2018 to 2020. 2018 was the busiest year, with 2. Dr. McKenzie's most frequent co-authors are Douglas Graham Adler, MD and Klaus Bielefeldt, MD.
Papers3
Years published2018 to 2020
Dr. McKenzie's most frequent co-authors
Recent publications by Dr. McKenzie
Disease Models, AnimalElectric Stimulation TherapyElectrodes, Implanted
See who Dr. McKenzie researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. McKenzie 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. Patrick Carroll McKenzie graduated from VCU School of Medicine
Dr. McKenzie graduated from VCU School of Medicine in 2013.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Patrick Carroll McKenzie accepts plans from 2 insurance carriers
Dr. McKenzie is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. McKenzie accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Patrick Carroll McKenzie'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 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)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)Doctors and Clinicians Utilization Data (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 |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Patrick Carroll McKenzie
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. Patrick Carroll McKenzie's NPI number?
Dr. Patrick Carroll McKenzie's NPI number is 1699112086. It was assigned on May 27, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick Carroll McKenzie?
Dr. Patrick Carroll McKenzie is an internist in Richmond, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Patrick Carroll McKenzie practice?
Dr. McKenzie practices at 901 Nevin Ave, Richmond, CA 94801. Dr. McKenzie's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. McKenzie to 1 group practice or clinic.
What is Dr. Patrick Carroll McKenzie's office phone number?
The practice phone on file for Dr. McKenzie is (510) 307-1555.
What is Dr. Patrick Carroll McKenzie's medical license number?
Dr. McKenzie's Kentucky license number on file is 49426, one of the licenses on file in 3 states.
Which states has Dr. Patrick Carroll McKenzie been licensed in?
Dmand AI has state licenses on file for Dr. McKenzie in Kentucky (2016 to 2018), California (2020 to 2026) and Utah (2017 to 2022).
Which hospitals is Dr. Patrick Carroll McKenzie affiliated with?
Dr. McKenzie is affiliated with Walnut Creek Medical Center.
What medical group is Dr. Patrick Carroll McKenzie part of?
Dr. McKenzie is linked to The Permanente Medical Group, Inc.
Does Dr. Patrick Carroll McKenzie accept Medicare?
Yes. CMS data shows Dr. McKenzie billed Medicare for 72 services in 2017, and Dr. McKenzie accepts Medicare assignment.
Does Dr. Patrick Carroll McKenzie offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. McKenzie as offering telehealth services.
Show 8 more questionsShow fewer questions
Is Dr. Patrick Carroll McKenzie board certified?
Yes. Dr. McKenzie is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Patrick Carroll McKenzie bill to Medicare?
In 2017, Dr. McKenzie's most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99232) and hospital inpatient care (99223).
Where did Dr. Patrick Carroll McKenzie go to medical school?
Dr. McKenzie graduated from VCU School of Medicine in 2013.
What drugs does Dr. Patrick Carroll McKenzie prescribe most?
In 2024 Medicare Part D data, Dr. McKenzie's most prescribed drugs by claims were Omeprazole, Gavilyte-C and Pantoprazole Sodium.
How long has Dr. Patrick Carroll McKenzie been practicing?
Dr. McKenzie graduated from medical school in 2013, 13 years ago.
Does Dr. Patrick Carroll McKenzie do research?
Dmand AI links 3 publications to Dr. McKenzie, published from 2018 to 2020.
Who does Dr. Patrick Carroll McKenzie publish with?
Dr. McKenzie's most frequent co-authors are Douglas Graham Adler, MD (1 shared paper) and Klaus Bielefeldt, MD (1 shared paper).
What insurance does Dr. Patrick Carroll McKenzie accept?
Dr. McKenzie is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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