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DR. JASON A DIAZ MD
NPI 1417144353
Otolaryngology in Saint Louis, MO

Active since September 25, 2007PECOS EnrolledAccepts Medicare Assignment
93.33/100
CMS Quality Rating
4921 PARKVIEW PL, STE 11A, SAINT LOUIS, MO 63110(314) 362-7509(314) 747-9744 Get Directions Write a Review

NPPES record last updated: January 17, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Jason A Diaz Md NPPES

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

DR. JASON A DIAZ MD (NPI 1417144353) is an individual otolaryngology provider in Saint Louis, Missouri, licensed in Missouri (2009016631) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS, is affiliated with Lds Hospital, and is a graduate of Medical College Of Georgia School Of Medicine (2003).

NPPES Registry Identity

NPI1417144353
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. JASON A DIAZCredential: MD
Location Address4921 PARKVIEW PL, STE 11ASaint Louis, MO 63110-1032
Mailing Address660 S Euclid Ave, C B 8115Saint Louis, MO 63110-1010 · (314) 362-7509 · Fax (314) 362-7522
Phone(314) 362-7509
Fax(314) 747-9744
Sole ProprietorNo
Medical School CMSMedical College Of Georgia School Of MedicineGraduated 2003
Enumeration DateSeptember 25, 2007
Last NPPES UpdateJanuary 17, 2014
✔ NPI 1417144353 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in MO · 2009016631
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.
4921 PARKVIEW PL, Saint Louis, MO 63110
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc., Molina Healthcare 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. Jason A Diaz 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 ID7618044389
PECOS Enrollment IDI20140912001070
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 7

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 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.
52 services39 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.
43 services28 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
23 services23 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
22 services18 patients
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.
19 services14 patients
Fine needle aspiration biopsy using ultrasound guidance, first growth 10005
Fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is inserted into a growth to extract a small sample. Ultrasound helps accurately locate the growth. This sample is then analyzed to determine the nature of the growth.
16 services15 patients

Hospital Affiliations CMS Care Compare 5

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

Lds Hospital

Acute Care Hospitals · Salt Lake City, UT
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460006
Location8th Avenue And C StreetSalt Lake City, UT 84143 · Salt Lake County
Emergency services Birthing friendly

Intermountain Medical Center

Acute Care Hospitals · Murray, UT
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460010
Location5121 South Cottonwood StreetMurray, UT 84107 · Salt Lake County
Emergency services Birthing friendly

Intermountain Health Alta View Hospital

Acute Care Hospitals · Sandy, UT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460044
Location9660 South 1300 EastSandy, UT 84094 · Salt Lake County
Emergency services Birthing friendly

St Mark's Hospital

Acute Care Hospitals · Salt Lake City, UT
3/5 CMS rating
OwnershipProprietary
CMS Certification Number460047
Location1200 East 3900 SouthSalt Lake City, UT 84124 · Salt Lake County
Emergency services Birthing friendly

Riverton Hospital

Acute Care Hospitals · Riverton, UT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460058
Location3741 West 12600 SouthRiverton, UT 84065 · Salt Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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.

93.33/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.66
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. CHERYL ANNE WOOLSEY PA
Physician Assistant
4921 PARKVIEW PL, DIV SURG HPB, STE 12B
SAINT LOUIS, MO 63110
St. Louis City (314) 747-0410
DR. CHARLES PHILLIPS JONES MD
Urology
4921 PARKVIEW PL, DIV SURG UROLOGY, STE 11C
SAINT LOUIS, MO 63110
St. Louis City (314) 362-8200
DR. PRABHA RANGANATHAN MD
Internal Medicine (Rheumatology)
4921 PARKVIEW PL, DIV IM RHEUMATOLOGY, STE 5C
SAINT LOUIS, MO 63110
St. Louis City (314) 286-2635
DR. RALPH GERARD DACEY JR. MD
Neurological Surgery
4921 PARKVIEW PL, DEPT NEUROLOGICAL SURGERY, STE 6B/6C
SAINT LOUIS, MO 63110
St. Louis City (314) 362-3577
DR. KRASIMIRA MIKHAILOVA MIKHOVA MD
Internal Medicine (Clinical Cardiac Electrophysiology)
4921 PARKVIEW PL, DIV IM CARDIOLOGY, STE 8B
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1291
DR. JEE YOUNG HAN MD
Psychiatry & Neurology (Neurology)
4921 PARKVIEW PL, DIV NEUROLOGY AGING AND DEMENTIA, STE 6C
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1408
MS. MAREN JORGENSEN OT
Occupational Therapist
4921 PARKVIEW PL, DEPT OCCUPATIONAL THERAPY, STE 6F
SAINT LOUIS, MO 63110
St. Louis City (314) 286-1669
DR. ADRIAN SHIFREN MD
Internal Medicine (Pulmonary Disease)
4921 PARKVIEW PL, DIV IM PULMONARY AND CCM, 8TH FL
SAINT LOUIS, MO 63110
St. Louis City (314) 454-8917

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 Jason Diaz's NPI number?

The NPI number for Jason Diaz is 1417144353. It was assigned to this individual provider in the NPPES registry on September 25, 2007.

Where is Jason Diaz located?

Jason Diaz practices at 4921 Parkview Pl Ste 11A, Saint Louis, MO 63110. The listed phone number is (314) 362-7509.

What is Jason Diaz's specialty?

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

Is Jason Diaz enrolled in Medicare?

Yes. Jason Diaz 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 Jason Diaz accept?

Health plans from BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc., Molina Healthcare, Regence BlueCross BlueShield of Utah and Select Health and 1 other insurer list Jason Diaz 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 Jason Diaz affiliated with any hospitals?

According to CMS data, Jason Diaz is affiliated with Lds Hospital, Intermountain Medical Center, Intermountain Health Alta View Hospital, St Mark's Hospital and Riverton Hospital.

When was this NPI record last updated?

The NPPES record for Jason Diaz was last updated on January 17, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.