Physician Profile
Adam S. Fierer, MD
Unclaimed ProfileAbout Dr. Fierer
Adam S. Fierer, MD is a healthcare provider in Oceanside, CA specializing in general surgery. Adam trained at University of California, San Diego School of Medicine, graduating in 1989. Adam is also listed as specializing in surgery. Medicare claims data shows Adam provided 123 services to 120 patients. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1205831161.
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
- (760) 724-5352
- Email not available
Practice Locations
3998 VISTA WAY STE C200
Oceanside, CA 92056
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
- Anal fissure
- Anal fistula
- Hemorrhoids
- Perianal abscess
- Rectal prolapse
Appendix, bowel, and emergency
- Diverticulitis
- Intra-abdominal abscess
- Mesenteric ischemia
- Peritonitis
Gallbladder and biliary
- Acute gallbladder inflammation
- Biliary dyskinesia
Hernia and abdominal wall
- Belly-button hernia
- Femoral hernia
- Groin hernia
- Hiatal hernia
- Incisional hernia
- Ventral hernia
Skin and soft tissue
- Epidermoid cyst
- Hidradenitis suppurativa
- Lipoma
- Skin and soft-tissue abscess
- Soft-tissue mass
Abdominal
Abdominal wall
Breast
- Benign breast disease
- Breast abscess
- Gynecomastia
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
- Diaphragmatic hernia
- Sports Hernia
- Strangulated 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
- Laparoscopic groin-hernia repair
- Robotic hernia repair
Skin and soft tissue
Abdominal surgery
Abdominal wall
- Abdominal Muscle Separation Repair
Access and nutrition
- Jejunostomy feeding-tube placement
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
- Colostomy Surgery
- Ileostomy Surgery
- Ostomy reversal
Digestive procedures
Endocrine surgery
- Partial Thyroid Removal
Gastrointestinal
Hernia surgery
- Sports hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
Wound care
- Wound cleaning and debridement
Procedures Most Often Billed to Medicare
123 services · 120 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Repair of groin hernia using an endoscope | Procedure | 49650 |
14 | As often as other peers in General Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
29 | As often as other peers in General Surgery |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
22 | As often as other peers in General Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
17 | Less often than most peers in General Surgery |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
16 | Less often than most peers in General Surgery |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
13 | Less often than most peers in General Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
12 | Less 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 2
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 Oceanside 4
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Repair of groin hernia using an endoscope 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Fierer specialize in?
Dr. Fierer is a general surgeon in Oceanside, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where is Dr. Fierer located?
Dr. Fierer is listed at 3998 Vista Way Ste C200, Oceanside, CA 92056. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Fierer's phone number?
The number on file is (760) 724-5352. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Fierer?
Dr. Fierer's National Provider Identifier is 1205831161. 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 Dr. Fierer go to medical school?
Dr. Fierer attended University of California, San Diego School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Fierer have?
Dr. Fierer has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Fierer do most often?
According to Medicare billing data, Dr. Fierer performs procedures including repair of groin hernia using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Fierer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Fierer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.