DR. TIMOTHY DETTMER M.D.
NPI 1275527111
Otolaryngology in Mason City, IA

Q: What is Timothy Dettmer's NPI number?

The NPI number for Timothy Dettmer is 1275527111. It was assigned to this individual provider in the NPPES registry on September 7, 2005.

Q: What is Timothy Dettmer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Timothy Dettmer was last updated on January 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since September 07, 2005PECOS EnrolledAccepts Medicare Assignment

250 S CRESCENT DR, MASON CITY, IA 50401(641) 494-5380(641) 494-5381 Get Directions Write a Review

NPPES record last updated: January 9, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Timothy Dettmer M.d. NPPES

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

DR. TIMOTHY DETTMER M.D. (NPI 1275527111) is an individual otolaryngology provider in Mason City, Iowa, licensed in Iowa (35965) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (2000).

NPPES Registry Identity

NPI1275527111

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameDR. TIMOTHY DETTMERCredential: M.D.

Location Address250 S CRESCENT DRMason City, IA 50401-2926

Mailing Address250 S Crescent DrMason City, IA 50401-2926 · (641) 494-5400 · Fax (641) 494-5403

Phone(641) 494-5380

Fax(641) 494-5381

Sole ProprietorNo

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 2000

Enumeration DateSeptember 7, 2005

Last NPPES UpdateJanuary 9, 2024

NPPES CertifiedJanuary 9, 2024

✔ NPI 1275527111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in IA · 35965

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.

250 S CRESCENT DR, Mason City, IA 50401

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Timothy Dettmer M.d. 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 ID6002842036

PECOS Enrollment IDI20050712000295, I20061212000072

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.

Medicare Billing Reassignments

Medicare enrollment records show Timothy Dettmer reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mason City Clinic PC

Same address

Otolaryngology

250 S CRESCENT DR
Mason City, IA 50401

Reassigned Medicare billing, Iowa enrollment
65 clinicians in this Medicare group

NPI 1043254055 (800) 622-1411

North Iowa Mercy Clinics

Same address

Cardiovascular Disease

250 S CRESCENT DR STE 200
Mason City, IA 50401

Reassigned Medicare billing, Iowa enrollment
420 clinicians in this Medicare group

NPI 1801147269 (641) 494-5300

Floyd County Memorial Hospital Commission

28 mi

Emergency Medicine

800 11TH ST
Charles City, IA 50616

Reassigned Medicare billing, Iowa enrollment
Also billed through NPI 1265402390 (Iowa)
96 clinicians in this Medicare group

NPI 1346210408 (641) 228-6830

United Hospital District Inc.

56 mi

Critical Access

515 S MOORE ST
Blue Earth, MN 56013

Reassigned Medicare billing, Minnesota enrollment
51 clinicians in this Medicare group

NPI 1952307688 (507) 526-3273

Palo Alto County Hospital

64 mi

Family Medicine

107 DIVISION ST
West Bend, IA 50597

Reassigned Medicare billing, Iowa enrollment
26 clinicians in this Medicare group

NPI 1164434080 (515) 887-7891

Iowa Physicians Clinic Medical Foundation

107 mi

General Practice

8101 BIRCHWOOD CT, SUITE N
Johnston, IA 50131

Reassigned Medicare billing, Iowa enrollment
1,506 clinicians in this Medicare group

NPI 1891127502 (515) 471-9300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 18

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 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.

282 services206 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

243 services171 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

164 services123 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.

163 services151 patients

Removal of impacted ear wax 69210

163 services100 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

121 services121 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

98 services98 patients

Diagnostic exam of voice box using a flexible endoscope 31575

92 services88 patients

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.

83 services80 patients

Evaluation of sleep-disordered breathing by examination of upper airway using an endoscope 42975

This procedure examines your upper airway for sleep-related breathing issues. An endoscope, a thin tube with a light and camera, is gently inserted through your nose. This allows a detailed view of your airway to identify any abnormalities that could disrupt your sleep.

45 services45 patients

Insertion of hypoglossal nerve neurostimulator electrode and generator and breathing sensor electrode 64582

This procedure involves placing a device that stimulates the hypoglossal nerve, which controls tongue movement. A generator powers the device and a sensor monitors your breathing. This helps keep the airway open during sleep, improving conditions like sleep apnea.

41 services41 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

41 services41 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

29 services28 patients

Exam of ear using a microscope 92504

An exam of the ear using a microscope allows a detailed view of the ear structures. This non-invasive procedure helps identify issues such as infections, blockages, or ear damage. It's a safe, quick, and painless way to evaluate ear health.

26 services20 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

25 services23 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

22 services22 patients

Exam of ear using a microscope 92504

21 services16 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

18 services15 patients

Hospital Affiliations CMS Care Compare 5

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

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160064

Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County

Emergency services Birthing friendly

Hancock County Health System

Critical Access Hospitals · Britt, IA

OwnershipGovernment - Local

CMS Certification Number161307

Location532 1st St NWBritt, IA 50423 · Hancock County

Emergency services

Floyd County Medical Center

Critical Access Hospitals · Charles City, IA

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number161347

Location800 11th StCharles City, IA 50616 · Floyd County

Emergency services Birthing friendly

Palo Alto County Hospital

Critical Access Hospitals · Emmetsburg, IA

OwnershipGovernment - Local

CMS Certification Number161357

Location3201 1st StreetEmmetsburg, IA 50536 · Palo Alto County

Emergency services

United Hospital District

Critical Access Hospitals · Blue Earth, MN

OwnershipGovernment - Hospital District or Authority

CMS Certification Number241369

Location515 South Moore StreetBlue Earth, MN 56013 · Faribault County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50401 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

$122.23 typical visit price

range $52.96 – $161.40

Typical copayment $30.55 (range $13.24 – $40.35)

Most-billed visit code 99204

Established Patient

$66.36 typical visit price

range $16.91 – $131.98

Typical copayment $16.59 (range $4.22 – $32.99)

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.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

31%794 patients2/55-star benchmark: 85%

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

83%2,567 patients3/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

97%862 patients4/55-star benchmark: 99%

Falls: Screening for Future Fall Risk

Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period

70%770 patients3/55-star benchmark: 99%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

83%1,825 patients1/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

3%2,467 patients1/55-star benchmark: 97%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

77%770 patients4/55-star benchmark: 90%

Preventive Care and Screening: Influenza Immunization

Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization

79%740 patients4/55-star benchmark: 88%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user

Patients screenedForUse: 91% · 417 patients

Patients tobacco: 86% · 417 patients

46%39 patients2/55-star benchmark: 98%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

83%2,467 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

4%2,467 patients1/55-star benchmark: 89%

Use of High-Risk Medications in the Elderly

Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.

Lower rates are better for this measure.

Patients 2+: 0% · 770 patients

0%770 patients5/55-star benchmark: 100%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

3%2,467 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 9

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

5 suppliers13 claims13 services$38.91 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

7 suppliers22 claims22 services$111.60 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

5 suppliers16 claims33 services$41.86 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

5 suppliers12 claims12 services$68.21 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

10 suppliers27 claims27 services$24.04 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

4 suppliers20 claims20 services$21.42 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

LISA HOLT PMHNP-BC

Nurse Practitioner (Psychiatric/Mental Health)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5170

DR. RENE RECINOS M.D., PHD

Plastic Surgery

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5360

DR. ANGELA KAYE HARVEY AU.D.

Audiologist

250 S CRESCENT DR, #100
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5180

DR. MICHAEL W CRANE M.D.

Orthopaedic Surgery

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5210

KAITLYN ELIZABETH MCDERMITT PA-C

Physician Assistant

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5400

TRISHA LYNN TIBBITTS ARNP

Nurse Practitioner (Family)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5360

MASON CITY CLINIC PC

Otolaryngology

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (800) 622-1411

DR. BYRON T BEASLEY MD

Internal Medicine (Cardiovascular Disease)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5300

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 Timothy Dettmer's NPI number?

The NPI number for Timothy Dettmer is 1275527111. It was assigned to this individual provider in the NPPES registry on September 7, 2005.

Where is Timothy Dettmer located?

Timothy Dettmer practices at 250 S Crescent Dr, Mason City, IA 50401. The listed phone number is (641) 494-5380.

What is Timothy Dettmer's specialty?

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

Is Timothy Dettmer enrolled in Medicare?

Yes. Timothy Dettmer 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.

Which organizations bill Medicare for Timothy Dettmer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Dettmer reassigns Medicare benefits to 6 organizations: Mason City Clinic PC (Mason City, IA), North Iowa Mercy Clinics (Mason City, IA), Floyd County Memorial Hospital Commission (Charles City, IA), United Hospital District Inc. (Blue Earth, MN), Palo Alto County Hospital (West Bend, IA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Timothy Dettmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Timothy Dettmer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 2 other insurers list Timothy Dettmer 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 Timothy Dettmer affiliated with any hospitals?

According to CMS data, Timothy Dettmer is affiliated with Mercyone North Iowa Medical Center, Hancock County Health System, Floyd County Medical Center, Palo Alto County Hospital and United Hospital District.

When was this NPI record last updated?

The NPPES record for Timothy Dettmer was last updated on January 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.