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Anesthesiology

Zachary A. King, MD

Works at hospitals in Grand Blanc, MI · Flint, MI · Michigan

Summary

Dr. Zachary A. King, MD is an anesthesiologist at 2500 N Rd, Suite 101, Fenton, MI 48430. Phone: (810) 616-7246. Accepts Medicare assignment. In 2024, Zachary A. King had 406 Original Medicare patients and 12,902 services. NPI 1144503517. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Zachary A. King, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Zachary A. King accept Medicare assignment?
Yes. Medicare's clinician data says Zachary A. King accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Zachary A. King see?
In 2024, CMS data shows 406 Original Medicare patients and 12,902 services for Zachary A. King. This counts Original Medicare only and measures volume, not quality.
What is Zachary A. King's NPI number?
1144503517. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Zachary A. King, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients406
Services billed to Medicare12,902
Different services or procedures47
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, dexamethasone sodium phosphate, 1 mg (J1100)5,761 services
  2. Injection, bupivicaine, not otherwise specified, 0.5 mg (J0665)2,882 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)933 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)722 services
  5. Injection, methylprednisolone acetate, 1 mg (J1010)440 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis75%
  • Anxiety34%
  • Diabetes33%
  • Depression32%

Hospitals where Zachary A. King works

Medicare's Facility Affiliation Data lists Zachary A. King at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230197
  • Hurley Medical CenterFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230132
  • McLaren FlintFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230141

Practice locations

Addresses where Zachary A. King is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Anesthesiology doctors in Michigan →

Other anesthesiologists in Michigan

Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.

All anesthesiologists in Michigan →

Clinician information

CredentialMD
Medical schoolMichigan State University College Of Human Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1144503517
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians