DR. ZACHARY THOMAS LONJERS (MD) – Pulmonary Disease Physician, NPI 1104205491

DR. ZACHARY THOMAS LONJERS (MD) is a healthcare provider. based in St. louis, Missouri. specializing in PULMONARY DISEASE, CRITICAL CARE (INTENSIVISTS). They hold the professional credentials MD. They hold a License No. 2022016251 (MO). The NPI Number for DR. ZACHARY THOMAS LONJERS (MD) is 1104205491

Main info

Male
11 Years Of Experience
Accepts Medicare Assignment
Name
DR. ZACHARY THOMAS LONJERS (MD)
NPI
1104205491
Phone
(314) 362-5000
Address
660 S. EUCLID AVE. CB 8052
Enumeration Date
20 May 2015
Last Update Date
17 April 2025

Doctor Profile

Medical School Name
LOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Secondary Phone
-
Graduation Year
2015 (11 years ago)
PAC ID
0446562953
Group Practice PAC ID
9830008770
Professional Enrollment ID
I20230731002856
Address ID
MO631101032SA4921XPLXX300

Contacts

FHIR Endpoint
https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience56
Completeness85
Years active:11State licenses:1Other namesUpdated within 12 months

412 PULMONARY DISEASE in MO

Provider Addresses for DR. ZACHARY THOMAS LONJERS (MD)

  • 660 S. EUCLID AVE. CB 8052

    ST. LOUIS, MO 63110

    Phone: (314) 362-5000

    Fax: (773) 702-2230

    Type: Mailing

  • PO BOX 7412011

    CHICAGO, IL 606742011

    Phone: (314) 454-8917

    Fax: (314) 454-7524

    Type: Mailing

  • 1 BARNES JEWISH HOSPITAL PLZ

    DIV IM PULMONARY AND CRITICAL CARE MEDICINE

    SAINT LOUIS, MO 631101003

    Phone: (314) 454-8917

    Fax: (314) 454-7524

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2023-07-31

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20230731002856IPulmonary DiseaseMOTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99291Critical care, first 30-74 minutes6822$0
99204New patient office or other outpatient visit, 45-59 minutes2828$0
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes2315$0
99214Established patient office or other outpatient visit, 30-39 minutes2119$0
View full utilization report →

Insurance plans in this area (ZIP 63110)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 9830008770View full group profile

Reviews

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Frequently asked questions

Where can patients find DR. ZACHARY THOMAS LONJERS (MD)'s NPI?
You can confirm DR. ZACHARY THOMAS LONJERS (MD) with NPI 1104205491; it appears in the national provider directory.
Is DR. ZACHARY THOMAS LONJERS (MD) active in the national directory?
DR. ZACHARY THOMAS LONJERS (MD)'s public NPI profile is in an active state.
What kind of provider is DR. ZACHARY THOMAS LONJERS (MD)?
The page reflects Pulmonary Disease Physician for DR. ZACHARY THOMAS LONJERS (MD). Clinical services aligned with this taxonomy classification.
Where does public data place DR. ZACHARY THOMAS LONJERS (MD)?
The snapshot lists St. Louis, Missouri for DR. ZACHARY THOMAS LONJERS (MD); download NPPES for the complete set.
What if St. Louis, Missouri seems incomplete?
Street-level detail can be omitted — open the full address list for this NPI.

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