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Edit this profileWhere to find Andrew HAVENS RAMSEY Singleton
- Pasadena location main office
1044 S Fair Oaks Ave Ste 101, Pasadena, CA 91105 - Los Angeles location
1450 San Pablo St, Suite 6200, Los Angeles, CA 90033
About Andrew Singleton
Based in Pasadena, CA, Andrew HAVENS RAMSEY Singleton is listed in the NPI registry under general surgery. Andrew graduated from Jefferson Medical College of Thomas Jefferson University in 2009. Andrew is also listed as specializing in student in an organized health care education program and surgical critical care. Medicare claims data shows Andrew provided 895 services to 731 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, critical care, first 30-74 minutes, and critical care, each additional 30 minutes. NPI 1639312663 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (626) 449-4859
- Email not available
Practice Locations
1044 S FAIR OAKS AVE STE 101
Pasadena, CA 91105
1450 San Pablo St Suite 6200
Los Angeles, CA 90033
Conditions Commonly Evaluated or Treated
Within General Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anorectal
Appendix, bowel, and emergency
Gallbladder and biliary
Hernia and abdominal wall
Skin and soft tissue
Abdominal
Abdominal wall
Breast
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
Infections
Lymphatic
Oncology
Procedures & services
Most searched procedures
Bowel and emergency abdominal
- Colon resection
- Exploratory laparoscopy
- Exploratory laparotomy
- Repair of perforated peptic ulcer
- Small-bowel resection
- Surgery for bowel obstruction
- Surgical drainage of abdominal abscess
- Surgical lysis of adhesions
Gallbladder and appendix
Hernia repair
Skin and soft tissue
Abdominal surgery
Abdominal wall
Access and nutrition
Anorectal
- Anal fistula surgery
- Drainage of anal abscess
- Hemorrhoid removal
- Rubber-band ligation of hemorrhoids
- Surgery for chronic anal fissure
Biopsy
Breast surgery
- Axillary lymph-node dissection
- Excisional biopsy of a breast mass
- Mastectomy
- Sentinel lymph-node biopsy
Breast Surgery
Colorectal
Colorectal surgery
Digestive procedures
Endocrine surgery
Gastrointestinal
Hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
Wound care
Procedures Most Often Billed to Medicare
895 services · 731 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Limited ultrasound scan of abdomen | Imaging | 76705 |
45 | More often than most peers in General Surgery |
| Limited ultrasound scan behind abdominal cavity | Imaging | 76775 |
44 | Too few peers to compare |
| Ultrasound of heart, follow-up | Treatment | 93308 |
45 | More often than most peers in General Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
248 | More than most peers in General Surgery |
| Critical care, first 30-74 minutes | Office visit | 99291 |
109 | More often than most peers in General Surgery |
| Critical care, each additional 30 minutes | Office visit | 99292 |
102 | More often than most peers in General Surgery |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
91 | More often than most peers in General Surgery |
| Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by t | Billing code | G0316 |
54 | Too few peers to compare |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
41 | More than most peers in General Surgery |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
39 | More often than most peers in General Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other general surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other general surgeons in Pasadena 7
Same specialty, same city.
More connections — 22 related providers in 3 groups
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
Class of 2009 at Jefferson Medical College of Thomas Jefferson University 7
Providers who graduated from the same medical school in the same year.
Also performs Limited ultrasound scan of abdomen 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Andrew HAVENS RAMSEY Singleton specialize in?
Andrew HAVENS RAMSEY Singleton is a general surgeon in Pasadena, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where is Andrew HAVENS RAMSEY Singleton located?
Andrew HAVENS RAMSEY Singleton is listed at 1044 S Fair Oaks Ave Ste 101, Pasadena, CA 91105. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Andrew HAVENS RAMSEY Singleton's phone number?
The number on file is (626) 449-4859. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Andrew HAVENS RAMSEY Singleton?
Andrew HAVENS RAMSEY Singleton's National Provider Identifier is 1639312663. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Andrew HAVENS RAMSEY Singleton train?
Andrew HAVENS RAMSEY Singleton attended Jefferson Medical College of Thomas Jefferson University, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Andrew HAVENS RAMSEY Singleton have?
Andrew HAVENS RAMSEY Singleton has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What does Andrew HAVENS RAMSEY Singleton do most often?
According to Medicare billing data, Andrew HAVENS RAMSEY Singleton performs imaging including limited ultrasound scan of abdomen and limited ultrasound scan behind abdominal cavity; provides treatments such as ultrasound of heart, follow-up, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Andrew HAVENS RAMSEY Singleton's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Andrew HAVENS RAMSEY Singleton. If this is you, claiming it is free.
Guide.md
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