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DR. SEAN TIMOTHY MASSA MD
NPI 1336586809
Otolaryngology in Saint Louis, MO

Active since May 23, 2013PECOS EnrolledAccepts Medicare Assignment
81.57/100
CMS Quality Rating
1225 S GRAND, DOOR 3, SAINT LOUIS, MO 63104(314) 977-5110(314) 977-7686 Get Directions Write a Review

NPPES record last updated: March 5, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 5, 2021, Aug 7, 2018 (2 updates tracked since 2018).

About Dr. Sean Timothy Massa Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SEAN TIMOTHY MASSA MD (NPI 1336586809) is an individual otolaryngology provider in Saint Louis, Missouri, licensed in Missouri (2018008049) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Ssm Health Depaul Hospital St Louis, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1336586809
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. SEAN TIMOTHY MASSACredential: MD
Location Address1225 S GRAND, DOOR 3Saint Louis, MO 63104
Mailing Address1008 S Spring Ave # 3300Saint Louis, MO 63110-2520 · (314) 977-8884 · Fax (314) 977-1820
Phone(314) 977-5110
Fax(314) 977-7686
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMay 23, 2013
Last NPPES UpdateMarch 5, 20212 updates tracked since enumeration
NPPES CertifiedFebruary 17, 2021
✔ NPI 1336586809 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in MO · 2018008049
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
1225 S GRAND, Saint Louis, MO 63104
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sean Timothy Massa Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2668775669
PECOS Enrollment IDI20180809004834
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
86 services55 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
61 services42 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
30 services30 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
25 services24 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
18 services17 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm Health Depaul Hospital St Louis

Acute Care Hospitals · Bridgeton, MO
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260104
Location12303 Depaul DriveBridgeton, MO 63044 · St. Louis County
Emergency services Birthing friendly

Ssm Health Saint Louis University Hospital

Acute Care Hospitals · Saint Louis, MO
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260105
Location3635 Vista AveSaint Louis, MO 63110 · St. Louis City County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.57/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.09
Promoting Interoperability100
Improvement Activities40
Cost54.28

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Filter holder and integrated filter without adhesive, for use in a tracheostoma heat and moisture exchange system, each A7507
DME-Orthotic Devices · category DF000N
1 supplier15 claims2,220 services$2.33 avg. paid by Medicare
Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035
Other-Enteral and Parenteral · category OB006N
2 suppliers14 claims420 services$7.01 avg. paid by Medicare
Enteral feeding supply kit; gravity fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4036
Other-Enteral and Parenteral · category OB006N
2 suppliers16 claims484 services$3.64 avg. paid by Medicare
Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152
Other-Enteral and Parenteral · category OB006N
2 suppliers14 claims9,521 services$0.38 avg. paid by Medicare
Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4154
Other-Enteral and Parenteral · category OB006N
2 suppliers15 claims7,304 services$0.59 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sean Massa's NPI number?

The NPI number for Sean Massa is 1336586809. It was assigned to this individual provider in the NPPES registry on May 23, 2013.

Where is Sean Massa located?

Sean Massa practices at 1225 S Grand Door 3, Saint Louis, MO 63104. The listed phone number is (314) 977-5110.

What is Sean Massa's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Sean Massa enrolled in Medicare?

Yes. Sean Massa is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Sean Massa accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 4 other insurers list Sean Massa as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Sean Massa affiliated with any hospitals?

According to CMS data, Sean Massa is affiliated with Ssm Health Depaul Hospital St Louis and Ssm Health Saint Louis University Hospital.

When was this NPI record last updated?

The NPPES record for Sean Massa was last updated on March 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.