Dr. John S. MacGregor, MD

  • San Francisco, CA
  • Cardiologist
NPI1831131846PAC ID7618923517
Medicare services, 2024
214
Medicare patients, 2024
129
Part D claims, 2024
13
Publications
25
MIPS score, 2024
97
Practice address
1001 Potrero Avenue, San Francisco, CA 94110
Practice phone
Call (415) 206-8000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

See all 6 affiliations

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Dr. John S. MacGregor is a cardiologist in San Francisco, California

Dr. MacGregor practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA.

Dr. MacGregor's NPI, 1831131846, was assigned on June 12, 2006. Dr. MacGregor graduated from Weill Cornell Medicine in 1984. Dr. MacGregor holds California license G56033.

NPI and contact details
Medicare PAC ID
7618923517
NPI enumeration date
June 12, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(415) 206-8000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
68
Medical school graduation
1984

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. John S. MacGregor practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California

Dr. MacGregor's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center, at 1001 Potrero Avenue, San Francisco, CA 94110 in San Francisco County. The practice phone is (415) 206-8000.

Source: Dmand AI Affiliation Data

Dr. John S. MacGregor is affiliated with 2 sites of care and 4 medical groups

Dr. MacGregor's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA. Dr. MacGregor is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. MacGregor to 3 more medical groups, each named with a free account.

See all 6 affiliations for Dr. MacGregor

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. John S. MacGregor's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. MacGregor practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Zuckerberg San Francisco General Hospital and Trauma CenterAvailable with a free account
+1 more site and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. John S. MacGregor is one of 2,375 cardiologists in California

Cardiovascular disease is Dr. MacGregor's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. MacGregor is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. MacGregor is licensed in California.

Specialties and state licenses

  • Cardiovascular disease, CaliforniaPrimaryLicense G56033 · 1985 to 2027 · taxonomy 207RC0000X

Clinical focus

Dmand AI lists angioplasty, cardiac catheterization, pacemaker replacement and syncope & collapse among the conditions Dr. MacGregor treats.

Cardiologists near Dr. MacGregor

Counts of cardiologists 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. John S. MacGregor billed Medicare for 214 services in 2024

CMS data shows 214 Medicare services from Dr. MacGregor across 6 procedure codes in 2024, for 129 Medicare patients. Medicare paid $24,421 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024214
Medicare patients129
Paid by Medicare$24,421
Procedure codes6

Dr. MacGregor's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Other services
2023: 912024: 11223%
Tests and treatments
2023: 792024: 8811%
Surgery
2023: 02024: 14

Dr. MacGregor compared with the California median for cardiologists, 2024

  • Dr. MacGregor
  • California median
Medicare services
214vs 1,56086% below
Medicare patients
129vs 64480% below
Part D claims
15vs 1,41099% below

Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.

Dr. MacGregor'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.

See all procedures by Dr. MacGregor

Need commercial claims for Dr. MacGregor?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. MacGregor and other cardiologists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. John S. MacGregor treated 129 Medicare patients in 2024, average age 71

CMS counts 129 Medicare patients who saw Dr. MacGregor in 2024. The largest group is 65 to 74, with 69 patients. 75% of them have high blood pressure, and 74% have ischemic heart disease. 91% are also on Medicaid. Their average risk score is 2.38, 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. MacGregor's median patient age at 73, with 47% women.

Medicare patients, 2024129
Average age71
Average risk score2.38
Also on Medicaid91%

Dr. MacGregor's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. MacGregor's Medicare patients by sex, 2024

  • Women4938%
  • Men8062%

Chronic conditions among Dr. MacGregor's Medicare patients, 2024

  1. High blood pressure75%
  2. Ischemic heart disease74%
  3. High cholesterol66%
  4. Heart failure65%
  5. Diabetes56%
  6. Atrial fibrillation43%
  7. Chronic kidney disease43%
  8. COPD33%

Share of Medicare patients with each condition. A patient can have several.

Dr. MacGregor's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 73

Patient panel by sex, all payers

  • Women47%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. John S. MacGregor wrote 13 Medicare Part D claims in 2024

In 2024, Dr. MacGregor wrote 13 Medicare Part D claims. 100% of them were for generic drugs. They cover 1 drug, with $298 in total drug cost. In 2016, CMS named 11 claims across 1 drug.

Part D claims, 202413
Drugs named by CMS1
Total drug cost$298

Dr. MacGregor's most prescribed drugs by claims, 2022

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, 2016 to 2022

  • 2016
  • 2022
Claims for drugs CMS names
2016: 112022: 1536%

Drugs named by CMS: 1 in 2022, 1 in 2016.

See all prescribing by Dr. MacGregor

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. John S. MacGregor scored 97 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. MacGregor for performance year 2024, reported as part of a group. Dr. MacGregor accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 22 procedures of pacemaker insertion or repair by Dr. MacGregor, more than 72% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. MacGregor's MIPS scores, performance year 2024

  • 97of 100Final score
  • 89.9of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 78of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. MacGregor ranks in Medicare procedure volume

Pacemaker insertion or repair
72nd percentile22 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Coronary angioplasty and stenting: 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

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Dr. John S. MacGregor has 25 publications on record

Dmand AI links 25 papers to Dr. MacGregor, published from 2011 to 2022. 2012 was the busiest year, with 7. The most frequent topics are California, Coronary Angiography and Predictive Value of Tests. Dr. MacGregor has published most often in Am J Cardiol. Dr. MacGregor's most frequent co-authors are Ehtisham Mahmud, MD, Kendrick Shunk, MD and Reginald I. Low, MD.

Papers25
Years published2011 to 2022

Dr. MacGregor's papers by year, 2011 to 2022

Topics Dr. MacGregor writes about most

  • California
  • Coronary Angiography
  • Predictive Value of Tests
  • Coronary Vessels
  • Myocardial Infarction
  • Stents
  • Cardiac Catheterization
  • Coronary Artery Bypass

Dr. MacGregor's most frequent co-authors

Recent publications by Dr. MacGregor

See all 25 publications and co-authors

See who Dr. MacGregor researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. MacGregor works with, so you can find a warm path to the right cardiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. John S. MacGregor received $10,131 in industry payments from 2017 to 2025

CMS Open Payments shows 41 general payments to Dr. MacGregor from 15 drug and device companies from 2017 to 2025. Travel and lodging make up the largest share, 86% of the total. Medtronic Vascular, Inc. paid the most, $9,023.

General payments to Dr. MacGregor by program year, 2017 to 2025

General payments to Dr. MacGregor by kind, 2017 to 2025

$10.1Kin total
  • Travel and lodging$8,66586%
  • Food and beverage$1,46614%

Companies that paid Dr. MacGregor the most, 2017 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. MacGregor

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. John S. MacGregor graduated from Weill Cornell Medicine

Dr. MacGregor graduated from Weill Cornell Medicine in 1984.

  1. Medical schoolWeill Cornell Medicine
  2. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine
  3. Board certified in interventional cardiologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. John S. MacGregor accepts plans from 4 insurance carriers

Dr. MacGregor is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and Regence Health Plans. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare

Plan types Dr. MacGregor accepts, by number of carriers

  1. Medicare4
  2. PPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. John S. MacGregor's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. John S. MacGregor

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. John S. MacGregor's NPI number?

Dr. John S. MacGregor's NPI number is 1831131846. It was assigned on June 12, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. John S. MacGregor?

Dr. John S. MacGregor is a cardiologist in San Francisco, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).

Where does Dr. John S. MacGregor practice?

Dr. MacGregor practices at 1001 Potrero Avenue, San Francisco, CA 94110. Dr. MacGregor's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA. Dmand AI also links Dr. MacGregor to 3 medical groups.

What is Dr. John S. MacGregor's office phone number?

The practice phone on file for Dr. MacGregor is (415) 206-8000.

What is Dr. John S. MacGregor's medical license number?

Dr. MacGregor holds California license G56033.

Which hospitals is Dr. John S. MacGregor affiliated with?

Dr. MacGregor practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California. Dr. MacGregor is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights.

What medical group is Dr. John S. MacGregor part of?

Dr. MacGregor is linked to UCSF Pediatrics. Dmand AI links Dr. MacGregor to 3 more medical groups.

Does Dr. John S. MacGregor accept Medicare?

Yes. CMS data shows Dr. MacGregor billed Medicare for 214 services in 2024, and Dr. MacGregor accepts Medicare assignment.

What is Dr. John S. MacGregor's MIPS score?

Dr. MacGregor's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.

How many Medicare patients does Dr. John S. MacGregor see?

CMS counts 129 Medicare patients who saw Dr. MacGregor in 2024, with an average age of 71.

Show 9 more questionsShow fewer questions

Is Dr. John S. MacGregor board certified?

Yes. Dr. MacGregor is board certified in cardiovascular disease by the American Board of Internal Medicine.

What services does Dr. John S. MacGregor bill to Medicare?

In 2024, Dr. MacGregor's most billed Medicare services were medicare service (G0500), heart test or procedure (93458) and heart test or procedure (93454).

Where did Dr. John S. MacGregor go to medical school?

Dr. MacGregor graduated from Weill Cornell Medicine in 1984.

What drugs does Dr. John S. MacGregor prescribe most?

In 2022 Medicare Part D data, Dr. MacGregor's most prescribed drugs by claims were Clopidogrel.

Has Dr. John S. MacGregor received payments from drug or device companies?

CMS Open Payments shows $10,131 in general payments to Dr. MacGregor from 15 companies from 2017 to 2025. The largest total came from Medtronic Vascular, Inc.

How long has Dr. John S. MacGregor been practicing?

Dr. MacGregor graduated from medical school in 1984, 42 years ago.

Does Dr. John S. MacGregor do research?

Dmand AI links 25 publications to Dr. MacGregor, published from 2011 to 2022.

Who does Dr. John S. MacGregor publish with?

Dr. MacGregor's most frequent co-authors are Ehtisham Mahmud, MD (7 shared papers), Kendrick Shunk, MD (7 shared papers) and Reginald I. Low, MD (5 shared papers).

What insurance does Dr. John S. MacGregor accept?

Dr. MacGregor is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and Regence Health Plans. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

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