Dr. Ruth D. Macquarrie, MD
- Medicare services, 2022
- 55
- Medicare patients, 2024
- 20
- Part D claims, 2018
- 1,748
- Industry payments
- $133
- Affiliated sites
- 1
- Practice address
- 210 N Tustin Ave, Santa Ana, CA 92705
- Practice phone
- Call (415) 925-8900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Greenbrae Surgery Center
Santa Ana, California
Find Dr. Macquarrie'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. Ruth D. Macquarrie is an anesthesiologist in Santa Ana, California
Dr. Macquarrie practices at Greenbrae Surgery Center in Santa Ana, California.
Dr. Macquarrie's NPI, 1942334362, was assigned on March 15, 2007. Dr. Macquarrie graduated from The Johns Hopkins University School of Medicine in 1998. Dr. Macquarrie holds California license A80909.
- NPI
- 1942334362NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143328542
- NPI enumeration date
- March 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 925-8900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruth D. Macquarrie practices at Greenbrae Surgery Center in Santa Ana, California
Dr. Macquarrie's primary practice is Greenbrae Surgery Center, at 210 N Tustin Ave, Santa Ana, CA 92705 in Orange County. The practice phone is (415) 925-8900.
- Greenbrae Surgery Center210 N Tustin Ave, Santa Ana, CA 92705 · Orange CountyPhone(415) 925-8900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ruth D. Macquarrie is affiliated with 2 sites of care and 2 medical groups
Dr. Macquarrie's primary practice is Greenbrae Surgery Center in Santa Ana, California. The medical group on file is Empire Anesthesia Inc. Dmand AI also links Dr. Macquarrie to 1 more ambulatory surgery center and 1 medical group, each 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. Ruth D. Macquarrie's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Macquarrie practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Greenbrae Surgery Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruth D. Macquarrie is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Macquarrie's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Macquarrie is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Macquarrie's licenses on file in 2 states: California and Nevada.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Nevada license
Anesthesiologists near Dr. Macquarrie
Counts of anesthesiologists 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. Ruth D. Macquarrie billed Medicare for 55 services in 2022
CMS data shows 55 Medicare services from Dr. Macquarrie across 2 procedure codes in 2022, for 20 Medicare patients. Medicare paid $7,514 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Macquarrie's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Anesthesia
- 2021: 3132022: 5582%
Dr. Macquarrie compared with the California median for anesthesiologists, 2022
- Dr. Macquarrie
- California median
- Medicare services
- 55vs 7224% below
- Medicare patients
- 20vs 14386% below
- Part D claims
- 1,748vs 2376.0 times
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Macquarrie's most billed Medicare procedure codes, 2022
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. Macquarrie and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruth D. Macquarrie treated 20 Medicare patients in 2024, average age 73
CMS counts 20 Medicare patients who saw Dr. Macquarrie in 2024. 75% of them have high cholesterol, and 70% have arthritis. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Macquarrie's median patient age at 40, with 50% women.
Chronic conditions among Dr. Macquarrie's Medicare patients, 2024
- High cholesterol75%
- Arthritis70%
- High blood pressure70%
Share of Medicare patients with each condition. A patient can have several.
Dr. Macquarrie's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruth D. Macquarrie wrote 1,748 Medicare Part D claims in 2018
In 2018, Dr. Macquarrie wrote 1,748 Medicare Part D claims. They cover 55 drugs, with $67,507 in total drug cost. In 2017, CMS named 444 claims across 20 drugs.
Dr. Macquarrie's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 4442018: 1,748294%
Drugs named by CMS: 55 in 2018, 20 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Ruth D. Macquarrie takes part in Medicare
Dr. Macquarrie 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. Ruth D. Macquarrie received $133 in industry payments from 2017 to 2018
CMS Open Payments shows 9 general payments to Dr. Macquarrie from 6 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 90% of the total. Eli Lilly and Company paid the most, $33.
General payments to Dr. Macquarrie by program year, 2017 to 2018
General payments to Dr. Macquarrie by kind, 2017 to 2018
- Food and beverage$11990%
- Education$1410%
Companies that paid Dr. Macquarrie the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruth D. Macquarrie graduated from The Johns Hopkins University School of Medicine
Dr. Macquarrie graduated from The Johns Hopkins University School of Medicine in 1998.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Sources for Dr. Ruth D. Macquarrie'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) |
| 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) |
| 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. Ruth D. Macquarrie
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. Ruth D. Macquarrie's NPI number?
Dr. Ruth D. Macquarrie's NPI number is 1942334362. It was assigned on March 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruth D. Macquarrie?
Dr. Ruth D. Macquarrie is an anesthesiologist in Santa Ana, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Ruth D. Macquarrie practice?
Dr. Macquarrie practices at 210 N Tustin Ave, Santa Ana, CA 92705. Dr. Macquarrie's primary practice is Greenbrae Surgery Center in Santa Ana, California. Dmand AI also links Dr. Macquarrie to 1 ambulatory surgery center and 1 medical group.
What is Dr. Ruth D. Macquarrie's office phone number?
The practice phone on file for Dr. Macquarrie is (415) 925-8900.
What is Dr. Ruth D. Macquarrie's medical license number?
Dr. Macquarrie holds California license A80909, one of the licenses on file in 2 states.
Which states has Dr. Ruth D. Macquarrie been licensed in?
Dmand AI has state licenses on file for Dr. Macquarrie in California (2002 to 2026) and Nevada (2007 to 2011).
What medical group is Dr. Ruth D. Macquarrie part of?
Dr. Macquarrie is linked to Empire Anesthesia Inc. Dmand AI links Dr. Macquarrie to 1 more medical group.
Does Dr. Ruth D. Macquarrie accept Medicare?
Yes. CMS data shows Dr. Macquarrie billed Medicare for 55 services in 2022, and Dr. Macquarrie accepts Medicare assignment.
How many Medicare patients does Dr. Ruth D. Macquarrie see?
CMS counts 20 Medicare patients who saw Dr. Macquarrie in 2024, with an average age of 73.
Is Dr. Ruth D. Macquarrie board certified?
Yes. Dr. Macquarrie is board certified in anesthesiology by the American Board of Anesthesiology.
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What services does Dr. Ruth D. Macquarrie bill to Medicare?
In 2022, Dr. Macquarrie's most billed Medicare services were anesthesia (01992) and anesthesia (00142).
Where did Dr. Ruth D. Macquarrie go to medical school?
Dr. Macquarrie graduated from The Johns Hopkins University School of Medicine in 1998.
What drugs does Dr. Ruth D. Macquarrie prescribe most?
In 2018 Medicare Part D data, Dr. Macquarrie's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Levothyroxine Sodium.
Has Dr. Ruth D. Macquarrie received payments from drug or device companies?
CMS Open Payments shows $133 in general payments to Dr. Macquarrie from 6 companies from 2017 to 2018. The largest total came from Eli Lilly and Company.
How long has Dr. Ruth D. Macquarrie been practicing?
Dr. Macquarrie graduated from medical school in 1998, 28 years ago.
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