Dr. Michael Guenther Kaiser, MD

  • Ridgewood, NJ
  • Neurosurgeon
NPI1598818817PAC ID6002916293
Medicare services, 2024
285
Medicare patients, 2024
180
Publications
36
Hospital affiliations
3
Industry payments
$1,815
Practice address
1200 Ridgewood E Ave, Ridgewood, NJ 07450
Practice phone
Call (201) 444-9002
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Ridgewood Ambulatory Surgery Center

Ridgewood, New Jersey

See all 6 affiliations

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Dr. Michael Guenther Kaiser is a neurosurgeon in Ridgewood, New Jersey

Dr. Kaiser practices at Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey.

Dr. Kaiser's NPI, 1598818817, was assigned on January 19, 2007. Dr. Kaiser graduated from Yale School of Medicine in 1994. Dr. Kaiser holds New York license 220494-1.

NPI and contact details
Medicare PAC ID
6002916293
NPI enumeration date
January 19, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(201) 444-9002
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
58
Medical school graduation
1994

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Michael Guenther Kaiser practices at Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey

Dr. Kaiser's primary practice is Ridgewood Ambulatory Surgery Center, at 1200 Ridgewood E Ave, Ridgewood, NJ 07450 in Bergen County. The practice phone is (201) 444-9002.

  • Ridgewood Ambulatory Surgery Center
    1200 Ridgewood E Ave, Ridgewood, NJ 07450 · Bergen CountyPhone(201) 444-9002

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Michael Guenther Kaiser is affiliated with 5 sites of care and 1 medical group

Dr. Kaiser's primary practice is Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey. Dr. Kaiser is also affiliated with The Valley Hospital. The medical group on file is Neurosurgeons of New Jersey. Dmand AI also links Dr. Kaiser to 2 more hospitals and 1 group practice or clinic, each named with a free account.

See all 6 affiliations for Dr. Kaiser

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Michael Guenther Kaiser's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kaiser practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ridgewood Ambulatory Surgery CenterAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Michael Guenther Kaiser is one of 211 neurosurgeons in New Jersey

Neurological surgery is Dr. Kaiser's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Kaiser is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Kaiser's licenses on file in 3 states: New York, New Jersey and Georgia.

Specialties and state licenses

  • Neurological surgery, New YorkPrimaryLicense 220494-1 · 1995 to 2026 · taxonomy 207T00000X
  • New Jersey license2006 to 2027
  • Georgia license2000 to 2001

Clinical focus

Dmand AI lists back and neck pain treatment without fusion, lower back pain, neck pain and spine problems and spinal fusion among the conditions Dr. Kaiser treats.

Neurosurgeons near Dr. Kaiser

Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.

211neurosurgeons in New Jersey
2neurosurgeons in Ridgewood

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Michael Guenther Kaiser billed Medicare for 285 services in 2024

CMS data shows 285 Medicare services from Dr. Kaiser across 7 procedure codes in 2024, for 180 Medicare patients. Medicare paid $32,347 for them.

Medicare services, 2024285
Medicare patients180
Paid by Medicare$32,347
Procedure codes7

Dr. Kaiser's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1642024: 19921%
Surgery
2023: 02024: 86

Where Dr. Kaiser's Medicare services took place, 2024

  • In an office19970%
  • In a facility8630%

Dr. Kaiser compared with the New Jersey median for neurosurgeons, 2024

  • Dr. Kaiser
  • New Jersey median
Medicare services
285vs 16276% above
Medicare patients
180vs 13632% above

Medians across 197 neurosurgeons in New Jersey with Dmand AI profiles that report each measure.

Dr. Kaiser's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Kaiser

Need commercial claims for Dr. Kaiser?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kaiser and other neurosurgeons in New Jersey.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Michael Guenther Kaiser treated 180 Medicare patients in 2024, average age 74

CMS counts 180 Medicare patients who saw Dr. Kaiser in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.07, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Kaiser's median patient age at 65, with 41% women.

Medicare patients, 2024180
Average age74
Average risk score1.07

Dr. Kaiser's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Kaiser's Medicare patients by sex, 2024

  • Women9854%
  • Men8246%

Chronic conditions among Dr. Kaiser's Medicare patients, 2024

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Anxiety34%
  5. Diabetes33%
  6. Ischemic heart disease29%
  7. Mood disorders26%
  8. Depression22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kaiser's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women41%
  • Men55%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Michael Guenther Kaiser ranks in the 72nd percentile for laminectomy or laminotomy (partial removal of spine bones) in Medicare

Dr. Kaiser accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 42 procedures of laminectomy or laminotomy (partial removal of spine bones) by Dr. Kaiser, more than 72% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Kaiser ranks in Medicare procedure volume

Spinal fusion
70th percentile88 procedures
Laminectomy or laminotomy (partial removal of spine bones)
72nd percentile42 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Michael Guenther Kaiser has 36 publications on record

Dmand AI links 36 papers to Dr. Kaiser, published from 2001 to 2019. 2015 was the busiest year, with 2. The most frequent topics are Lumbar Vertebrae, Spinal Fusion and Cervical Vertebrae. Dr. Kaiser has published most often in Neurosurgery. Dr. Kaiser's most frequent co-authors are John E. O'Toole, MD, Paul A. Anderson, MD and John H. Chi, MD.

Papers36
Years published2001 to 2019

Dr. Kaiser's papers by year, 2001 to 2019

Topics Dr. Kaiser writes about most

  • Lumbar Vertebrae
  • Spinal Fusion
  • Cervical Vertebrae
  • Evidence-Based Medicine
  • Neurosurgery
  • Spinal Fractures
  • Spinal Injuries
  • Thoracic Vertebrae

Dr. Kaiser's most frequent co-authors

Recent publications by Dr. Kaiser

See all 36 publications and co-authors

See who Dr. Kaiser researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kaiser works with, so you can find a warm path to the right neurosurgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Michael Guenther Kaiser received $1,815 in industry payments from 2017 to 2024

CMS Open Payments shows 20 general payments to Dr. Kaiser from 12 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 65% of the total. Medical Device Business Services, Inc. paid the most, $560.

General payments to Dr. Kaiser by program year, 2017 to 2024

General payments to Dr. Kaiser by kind, 2017 to 2024

$1.8Kin total
  • Food and beverage$1,17965%
  • Travel and lodging$53129%
  • Education$1046%

Companies that paid Dr. Kaiser the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Kaiser

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Michael Guenther Kaiser has 7 awards and honors on record

Dmand AI lists 7 awards for Dr. Kaiser, most recently America's Top Doctors in 2021.

Awards and honors for Dr. Kaiser

  1. 2021
    • America's Top Doctors
    • Top Doctors New York Metro Area
  2. 2020
    • Top Doctors
  3. 2018
    • Journal of Neurosurgery: Spine Editorial Board
  4. 2015
    • Guest Examiner
  5. Undated
    • Fellow (FAANS)
See all 7 awards

Source: Dmand AI Professional Profile Data

Dr. Michael Guenther Kaiser graduated from Yale School of Medicine

Dr. Kaiser graduated from Yale School of Medicine in 1994. Dr. Kaiser is a member of AANS, ACS, Congress of Neurological Surgeons and Society of University Neurosurgeons.

  1. Medical schoolYale School of Medicine
  2. Board certified in neurological surgeryAmerican Board of Neurological Surgery

Source: Dmand AI Professional Profile Data

Dr. Michael Guenther Kaiser accepts plans from 11 insurance carriers

Dr. Kaiser is in network with 11 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • United Healthcare
  • Horizon Blue Cross Blue Shield of New Jersey
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • Aspirus Health Plan
  • +3 more carriersWith a free account

Plan types Dr. Kaiser accepts, by number of carriers

  1. Medicare8
  2. PPO8
  3. HMO4
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Michael Guenther Kaiser's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Michael Guenther Kaiser

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Michael Guenther Kaiser's NPI number?

Dr. Michael Guenther Kaiser's NPI number is 1598818817. It was assigned on January 19, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Michael Guenther Kaiser?

Dr. Michael Guenther Kaiser is a neurosurgeon in Ridgewood, New Jersey. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Michael Guenther Kaiser practice?

Dr. Kaiser practices at 1200 Ridgewood E Ave, Ridgewood, NJ 07450. Dr. Kaiser's primary practice is Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey. Dmand AI also links Dr. Kaiser to 2 hospitals and 1 group practice or clinic.

What is Dr. Michael Guenther Kaiser's office phone number?

The practice phone on file for Dr. Kaiser is (201) 444-9002.

What is Dr. Michael Guenther Kaiser's medical license number?

Dr. Kaiser holds New York license 220494-1, one of the licenses on file in 3 states.

Which states has Dr. Michael Guenther Kaiser been licensed in?

Dmand AI has state licenses on file for Dr. Kaiser in New York (1995 to 2026), New Jersey (2006 to 2027) and Georgia (2000 to 2001).

Which hospitals is Dr. Michael Guenther Kaiser affiliated with?

Dr. Kaiser is affiliated with The Valley Hospital. Dmand AI links Dr. Kaiser to 2 more hospitals.

What medical group is Dr. Michael Guenther Kaiser part of?

Dr. Kaiser is linked to Neurosurgeons of New Jersey.

Does Dr. Michael Guenther Kaiser accept Medicare?

Yes. CMS data shows Dr. Kaiser billed Medicare for 285 services in 2024, and Dr. Kaiser accepts Medicare assignment.

How many Medicare patients does Dr. Michael Guenther Kaiser see?

CMS counts 180 Medicare patients who saw Dr. Kaiser in 2024, with an average age of 74.

Show 8 more questionsShow fewer questions

Is Dr. Michael Guenther Kaiser board certified?

Yes. Dr. Kaiser is board certified in neurological surgery by the American Board of Neurological Surgery.

What services does Dr. Michael Guenther Kaiser bill to Medicare?

In 2024, Dr. Kaiser's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and surgery: bones and joints (22614).

Where did Dr. Michael Guenther Kaiser go to medical school?

Dr. Kaiser graduated from Yale School of Medicine in 1994.

Has Dr. Michael Guenther Kaiser received payments from drug or device companies?

CMS Open Payments shows $1,815 in general payments to Dr. Kaiser from 12 companies from 2017 to 2024. The largest total came from Medical Device Business Services, Inc.

How long has Dr. Michael Guenther Kaiser been practicing?

Dr. Kaiser graduated from medical school in 1994, 32 years ago.

Does Dr. Michael Guenther Kaiser do research?

Dmand AI links 36 publications to Dr. Kaiser, published from 2001 to 2019.

Who does Dr. Michael Guenther Kaiser publish with?

Dr. Kaiser's most frequent co-authors are John E. O'Toole, MD (12 shared papers), Paul A. Anderson, MD (11 shared papers) and John H. Chi, MD (11 shared papers).

What insurance does Dr. Michael Guenther Kaiser accept?

Dr. Kaiser is in network with 11 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

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