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Individual provider

Michael Thornton, MD

Internal Medicine Physician Pulmonary Disease Physician Hospitalist Physician Medicare enrolled

Michael Thornton, MD is a Critical Care Medicine (Internal Medicine) Physician in Sacramento, CA, registered under NPI 1003892233. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 4150 V ST SUITE 3400, Sacramento, CA 95817. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

4150 V ST SUITE 3400, Sacramento, CA 95817 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
A81778 CA Internal Medicine Physician
A81778 CA Pulmonary Disease Physician
A81778 CA Hospitalist Physician
A81778 CA Critical Care Medicine (Internal… primary

This provider holds licence A81778 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Critical Care (intensivists)
PAC ID
5294795720
Enrollment ID
I20041018001268

Medicare enrolment is recorded as approved under the provider type Practitioner - Critical Care (intensivists). Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

What Critical Care Medicine covers

An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists. NUCC Health Care Provider Taxonomy, code 207RC0200X
Allopathic & Osteopathic Physicians ›Internal Medicine ›Critical Care Medicine

All registered taxonomy codes

This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
207R00000X Internal Medicine Physician A81778 CA
207RP1001X Pulmonary Disease Physician Pulmonary Disease A81778 CA
208M00000X Hospitalist Physician A81778 CA
207RC0200X Critical Care Medicine (Internal Medicine) Physician Critical Care Medicine A81778 CA primary

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1003892233 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateDec 20, 2005
Last updatedDec 9, 2021
StatusActive
Sole proprietorNo
GenderMale
CredentialMD
Practice address 4150 V ST
SUITE 3400
Sacramento, CA 95817
(916) 734-3566
The last update on file is Dec 9, 2021. Providers are only required to update NPPES when their information changes, so an older date does not necessarily mean the details are wrong — but it is worth a quick call before you travel.

Number check

1003892233 passes the NPI check digit test The final digit 3 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 0 0 3 8 9 2 2 3
Doubled? — ×2 — ×2 — ×2 — ×2 — ×2 — ×2 — ×2
Value 8 0 8 8 0 2 0 0 3 7 9 4 2 6

Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1003892233?
NPI 1003892233 is the National Provider Identifier assigned to Michael Thornton, MD in Sacramento, CA. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Critical Care Medicine cover?
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
How do I contact Michael Thornton, MD?
The phone number on file with NPPES is (916) 734-3566, last updated Dec 9, 2021. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Michael Thornton, MD accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1003892233 a valid number?
Yes. 1003892233 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.