Andrew Havens Ramsey Singleton
Surgical Critical Care Physician · Pasadena, CA
Andrew Havens Ramsey Singleton is a surgical critical care physician with a practice address in Pasadena, California, and NPI 1639312663, issued on Apr 6, 2009. Check the license (California A135966, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Havens Ramsey Singleton
- Primary taxonomy
- Surgical Critical Care Physician 2086S0102X
- License number
- A135966 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1044 S Fair Oaks Ave Ste 101, Pasadena, CA 91105
- Phone
- (626) 449-4859
- Enumerated
- Apr 6, 2009
- Record last updated
- Jun 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (626) 403-0321
- Medicaid ID
- 1134778806 CA
- Medicare enrollment
- Enrolled (PECOS I20160712000661); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2009
- Entity
- Type 1 · individual
8 nearest surgical critical care physician records → All 160 in California → Look up another NPI →
Also registered at 1044 S Fair Oaks Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Dang, M.D.Internal Medicine Physician1316359581
Verify Andrew Havens Ramsey Singleton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A135966Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Desert Trauma Surgeons IncLynwood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Havens Ramsey Singleton among 160 surgical critical care physician records in California
Andrew Havens Ramsey Singleton is one of 160 surgical critical care physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 46% of them.
- NPI issued2009 · 46% of these records are older, 49% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2009 · median 2009 among the 127 with a school on file
- Record last updated2020 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Critical Care Physician providers in California
There are 160 surgical critical care physician records in California.
All 160 in California → Every provider in Pasadena → Surgical Critical Care Physician nationwide →
The 8 surgical critical care physician records with the nearest ZIP codes
- Brian Lugo, MDPasadena, CA 911051497911804
- John Woods, D.OLong Beach, CA 908131063704237
- William Hampton, M.D.Long Beach, CA 908071255374724
- Douglas Fraser, M.D.Long Beach, CA 908061669639092
- Youssef Shaban, DOLong Beach, CA 908061598111742
- Stephen Doane, M.D.Torrance, CA 905051942456322
- David Litvak, MDTorrance, CA 905051750458758
- Caroline DongTorrance, CA 905021215320882
Common questions
What is Andrew Havens Ramsey Singleton's NPI number?
Andrew Havens Ramsey Singleton's National Provider Identifier (NPI) is 1639312663, issued on Apr 6, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Havens Ramsey Singleton located?
The NPPES record lists a practice address at 1044 S Fair Oaks Ave Ste 101, Pasadena, CA, 91105. Phone: (626) 449-4859. Providers update this record themselves, so call before visiting.
How can I verify Andrew Havens Ramsey Singleton's license?
NPPES lists California license number A135966, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.