Physician Profile
Mariastella Serrano, MD
Unclaimed ProfileAbout Dr. Serrano
Mariastella Serrano, MD is a healthcare provider in Washington, DC specializing in pediatric gastroenterology. According to Medicare claims data, Mariastella cared for 36 Medicare patients across 13,541 services. The services billed most often include injection, vedolizumab, intravenous, 1 mg and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (202) 243-3558
- Email not available
Practice Locations
4200 WISCONSIN AVE NW STE 400
Washington, DC 20016
Conditions Commonly Evaluated or Treated
Within Gastroenterology 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
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
13,541 services · 36 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
41 |
| Injection, vedolizumab, intravenous, 1 mg | Drug given | J3380 |
13,500 |
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 pediatric gastroenterology specialists 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 pediatric gastroenterology specialists in Washington 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 8
Providers in DC who bill this service to Medicare most often.
Common questions
What does Dr. Serrano specialize in?
Dr. Serrano is a pediatric gastroenterology in Washington, DC. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Serrano located?
Dr. Serrano is listed at 4200 Wisconsin Ave Nw Ste 400, Washington, DC 20016. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Serrano's phone number?
The number on file is (202) 243-3558. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Serrano's NPI number?
Dr. Serrano's National Provider Identifier is 1922080126. 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. Serrano go to medical school?
Dr. Serrano attended Other, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Serrano been practicing?
Dr. Serrano has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Serrano do most often?
According to Medicare billing data, Dr. Serrano provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Serrano confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Serrano. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.