Andrew Havens Ramsey Singleton

  • Lynwood, CA
  • Surgical critical care physician
NPI1639312663PAC ID3375775067
Medicare services, 2024
895
Medicare patients, 2024
363
Publications
1
MIPS score, 2024
98
Hospital affiliations
2
Practice address
3630 East Imperial Highway, Lynwood, CA 90262
Practice phone
Call (310) 900-8900
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

St. Francis Medical Center

Hospital · Lynwood, California

See all 4 affiliations

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Andrew Havens Ramsey Singleton is a surgical critical care physician in Lynwood, California

Andrew Singleton practices at St. Francis Medical Center in Lynwood, California, part of Prime Healthcare Services.

Andrew Singleton's NPI, 1639312663, was assigned on April 6, 2009. Andrew Singleton graduated from Sidney Kimmel Medical College in 2009. Andrew Singleton holds California license A135966.

NPI and contact details
Medicare PAC ID
3375775067
NPI enumeration date
April 6, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(310) 900-8900
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
43
Medical school graduation
2009

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

Andrew Havens Ramsey Singleton practices at St. Francis Medical Center in Lynwood, California

Andrew Singleton's primary practice is St. Francis Medical Center, at 3630 East Imperial Highway, Lynwood, CA 90262 in Los Angeles County. The practice phone is (310) 900-8900.

Source: Dmand AI Affiliation Data

Andrew Havens Ramsey Singleton is affiliated with 3 sites of care and 1 medical group

Andrew Singleton's primary practice is St. Francis Medical Center in Lynwood, California, part of Prime Healthcare Services. Andrew Singleton is also affiliated with Huntington Hospital. The medical group on file is Desert Trauma Surgeons. Dmand AI also links Andrew Singleton to 1 more physician office, named with a free account.

See all 4 affiliations for Andrew Singleton

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

Dmand AI tracks the EHR system at Andrew Havens Ramsey Singleton's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Andrew Singleton practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
St. Francis Medical CenterAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Andrew Havens Ramsey Singleton is one of 145 surgical critical care physicians in California

Surgical critical care is Andrew Singleton's primary specialty in the NPI Registry, under taxonomy code 2086S0102X. Andrew Singleton is board certified in surgery by the American Board of Surgery. Dmand AI has Andrew Singleton's licenses on file in 2 states: California and Utah.

Specialties and state licenses

  • Surgical critical care, CaliforniaPrimaryLicense A135966 · 2015 to 2026 · taxonomy 2086S0102X
  • Utah license2011 to 2016

Clinical focus

Dmand AI lists chest trauma, gallbladder removal, multiple traumatic injuries, non-surgical back problems and traumatic coma among the conditions Andrew Singleton treats.

Surgical critical care physicians near Andrew Singleton

Counts of surgical critical care physicians 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

Andrew Havens Ramsey Singleton billed Medicare for 895 services in 2024

CMS data shows 895 Medicare services from Andrew Singleton across 13 procedure codes in 2024, for 363 Medicare patients. Medicare paid $68,190 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024895
Medicare patients363
Paid by Medicare$68,190
Procedure codes13

Andrew Singleton's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5662024: 70725%
Imaging
2023: 872024: 892%
Other services
2023: 552024: 542%
Tests and treatments
2023: 442024: 452%

Andrew Singleton compared with the California median for surgical critical care physicians, 2024

  • Andrew Singleton
  • California median
Medicare services
895vs 1954.6 times
Medicare patients
363vs 1272.9 times

Medians across 129 surgical critical care physicians in California with Dmand AI profiles that report each measure.

Andrew Singleton'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 Andrew Singleton

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Medicare shows one payer. Book a meeting to get commercial claims data for Andrew Singleton and other surgical critical care physicians in California.

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

Andrew Havens Ramsey Singleton treated 363 Medicare patients in 2024, average age 79

CMS counts 363 Medicare patients who saw Andrew Singleton in 2024. The largest group is 85 and over, with 123 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Andrew Singleton's median patient age at 56, with 40% women.

Medicare patients, 2024363
Average age79
Average risk score2.16
Also on Medicaid48%

Andrew Singleton's Medicare patients by age, 2024

Andrew Singleton's Medicare patients by sex, 2024

  • Women19253%
  • Men17147%

Chronic conditions among Andrew Singleton's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis64%
  4. Mood disorders51%
  5. Depression45%
  6. Ischemic heart disease45%
  7. Diabetes42%
  8. Heart failure41%

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

Andrew Singleton's patients across all payers

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

Patient panel by age, all payers

Median age 56

Patient panel by sex, all payers

  • Women40%
  • Men60%

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

Andrew Havens Ramsey Singleton scored 98 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Andrew Singleton for performance year 2024, reported as part of a group. Andrew Singleton accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Andrew Singleton's MIPS scores, performance year 2024

  • 98of 100Final score
  • 97.7of 100Quality
  • 40of 100Improvement Activities
  • 63of 100Cost

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

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 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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Andrew Havens Ramsey Singleton has 1 publication on record

Dmand AI links 1 paper to Andrew Singleton in 2024. Andrew Singleton's most frequent co-authors are Makenna Noelle Marty, MD, Jade Nguyen, MD and Amal Kamil Obaid-Schmid, MD.

Papers1

Andrew Singleton's most frequent co-authors

Recent publications by Andrew Singleton

See all 1 publications and co-authors

See who Andrew Singleton researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Andrew Singleton works with, so you can find a warm path to the right surgical critical care physicians.

How network discovery works

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

Andrew Havens Ramsey Singleton received $46 in industry payments from 2018 to 2025

CMS Open Payments shows 2 general payments to Andrew Singleton from 2 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Covidien LP paid the most, $29.

General payments to Andrew Singleton by program year, 2018 to 2025

Companies that paid Andrew Singleton the most, 2018 to 2025

Share is of all general payments to this clinician.

See all payments to Andrew Singleton

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

Andrew Havens Ramsey Singleton graduated from Sidney Kimmel Medical College

Andrew Singleton graduated from Sidney Kimmel Medical College in 2009.

  1. Medical schoolSidney Kimmel Medical College
  2. Board certified in surgeryAmerican Board of Surgery
  3. Board certified in surgical critical careAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Andrew Havens Ramsey Singleton accepts plans from 3 insurance carriers

Andrew Singleton is in network with 3 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • CMS Medicare

Plan types Andrew Singleton accepts, by number of carriers

  1. Medicare3
  2. PPO2

Source: Dmand AI Insurance Network Data

Sources for Andrew Havens Ramsey Singleton'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)
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 Andrew Havens Ramsey Singleton

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Andrew Havens Ramsey Singleton's NPI number?

Andrew Havens Ramsey Singleton's NPI number is 1639312663. It was assigned on April 6, 2009, and it is active in the NPI Registry.

What does Andrew Havens Ramsey Singleton specialize in?

Andrew Havens Ramsey Singleton is a surgical critical care physician in Lynwood, California. The primary specialty in the NPI Registry is Surgical Critical Care Physician (taxonomy code 2086S0102X).

Where does Andrew Havens Ramsey Singleton practice?

Andrew Singleton practices at 3630 East Imperial Highway, Lynwood, CA 90262. Andrew Singleton's primary practice is St. Francis Medical Center in Lynwood, California, part of Prime Healthcare Services. Dmand AI also links Andrew Singleton to 1 physician office.

What is Andrew Havens Ramsey Singleton's office phone number?

The practice phone on file for Andrew Singleton is (310) 900-8900.

What is Andrew Havens Ramsey Singleton's medical license number?

Andrew Singleton holds California license A135966, one of the licenses on file in 2 states.

Which states has Andrew Havens Ramsey Singleton been licensed in?

Dmand AI has state licenses on file for Andrew Singleton in California (2015 to 2026) and Utah (2011 to 2016).

Which hospitals is Andrew Havens Ramsey Singleton affiliated with?

Andrew Singleton practices at St. Francis Medical Center in Lynwood, California. Andrew Singleton is also affiliated with Huntington Hospital.

What medical group is Andrew Havens Ramsey Singleton part of?

Andrew Singleton is linked to Desert Trauma Surgeons.

Does Andrew Havens Ramsey Singleton accept Medicare?

Yes. CMS data shows Andrew Singleton billed Medicare for 895 services in 2024, and Andrew Singleton accepts Medicare assignment.

What is Andrew Havens Ramsey Singleton's MIPS score?

Andrew Singleton's MIPS final score for performance year 2024 is 98 out of 100, reported as part of a group.

Show 9 more questionsShow fewer questions

How many Medicare patients does Andrew Havens Ramsey Singleton see?

CMS counts 363 Medicare patients who saw Andrew Singleton in 2024, with an average age of 79.

Is Andrew Havens Ramsey Singleton board certified?

Yes. Andrew Singleton is board certified in surgery by the American Board of Surgery.

What services does Andrew Havens Ramsey Singleton bill to Medicare?

In 2024, Andrew Singleton's most billed Medicare services were hospital inpatient care (99232), critical care (99291) and critical care (99292).

Where did Andrew Havens Ramsey Singleton go to medical school?

Andrew Singleton graduated from Sidney Kimmel Medical College in 2009.

Has Andrew Havens Ramsey Singleton received payments from drug or device companies?

CMS Open Payments shows $46 in general payments to Andrew Singleton from 2 companies from 2018 to 2025. The largest total came from Covidien LP.

How long has Andrew Havens Ramsey Singleton been practicing?

Andrew Singleton graduated from medical school in 2009, 17 years ago.

Does Andrew Havens Ramsey Singleton do research?

Dmand AI links 1 publication to Andrew Singleton.

Who does Andrew Havens Ramsey Singleton publish with?

Andrew Singleton's most frequent co-authors are Makenna Noelle Marty, MD (1 shared paper), Jade Nguyen, MD (1 shared paper) and Amal Kamil Obaid-Schmid, MD (1 shared paper).

What insurance does Andrew Havens Ramsey Singleton accept?

Andrew Singleton is in network with 3 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

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