DR. DAVID TAEHYUNG AHN MD
NPI 1184949570
Internal Medicine - Endocrinology, Diabetes & Metabolism in Newport Beach, CA

Q: What is David Ahn's NPI number?

The NPI number for David Ahn is 1184949570. It was assigned to this individual provider in the NPPES registry on March 29, 2010.

Q: What is David Ahn's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for David Ahn was last updated on September 25, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 March 29, 2010PECOS EnrolledAccepts Medicare Assignment

97.33/100

CMS Quality Rating

520 SUPERIOR AVE STE 150, NEWPORT BEACH, CA 92663(949) 764-7366(949) 642-7703 Get Directions Write a Review

NPPES record last updated: September 25, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 25, 2018, Nov 10, 2015 (2 updates tracked since 2015).

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About Dr. David Taehyung Ahn Md NPPES

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

DR. DAVID TAEHYUNG AHN MD (NPI 1184949570) is an individual endocrinology, diabetes & metabolism provider in Newport Beach, California, licensed in California (A117662) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2010).

NPPES Registry Identity

NPI1184949570

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameDR. DAVID TAEHYUNG AHNCredential: MD

Location Address520 SUPERIOR AVE STE 150Newport Beach, CA 92663-3642

Mailing Address1771 La Loma DrSanta Ana, CA 92705-3056

Phone(949) 764-7366

Fax(949) 642-7703

Sole ProprietorYes

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2010

Enumeration DateMarch 29, 2010

Last NPPES UpdateSeptember 25, 20182 updates tracked since enumeration

✔ NPI 1184949570 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in CA · A117662

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

520 SUPERIOR AVE STE 150, Newport Beach, CA 92663

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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. David Taehyung Ahn Md 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 ID2567774946

PECOS Enrollment IDI20150629001684

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 Reassignment

Medicare enrollment records show David Ahn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

David Ahn, M.D., Inc

Same address

Endocrinology, Diabetes & Metabolism

520 SUPERIOR AVE STE 150
Newport Beach, CA 92663

Reassigned Medicare billing, California enrollment
Medicare enrollment name: David Ahn MD Inc
5 clinicians in this Medicare group

NPI 1114501848 (949) 764-7366

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 7

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 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.

750 services336 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

500 services206 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

249 services186 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

143 services143 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.

78 services78 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

78 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92663 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

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.

97.33/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

95.15

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Appropriate Treatment for Upper Respiratory Infection (URI)

100%26 patients5/55-star benchmark: 100%

Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture

Lower rates are better for this measure.

12%102 patients

Breast Cancer Screening

77%351 patients4/55-star benchmark: 93%

Cervical Cancer Screening

36%478 patients2/55-star benchmark: 98%

Colorectal Cancer Screening

23%814 patients2/55-star benchmark: 88%

Controlling High Blood Pressure

70%595 patients4/55-star benchmark: 91%

Diabetes: Eye Exam

6%853 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

43%866 patients3/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

86%1,987 patients4/55-star benchmark: 100%

e-Prescribing

99%427 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

42%528 patients2/55-star benchmark: 100%

HIV Screening

16%952 patients2/55-star benchmark: 60%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

46%1,260 patients2/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

5%1,157 patients1/55-star benchmark: 97%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

36%1,004 patients3/55-star benchmark: 61%

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

Patients screened: 97% · 440 patients

95%440 patients

Provide Patients Electronic Access to Their Health Information

100%1,314 patients5/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

75%875 patients3/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 6% · 560 patients

Patients totalRate: 15% · 560 patients

14%560 patients3/55-star benchmark: 100%

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 6

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

Supplies for maintenance of insulin infusion catheter, per week A4224

DME-Other DME · category DE017N

3 suppliers21 claims259 services$18.20 avg. paid by Medicare

Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225

DME-Other DME · category DE017N

3 suppliers22 claims720 services$2.35 avg. paid by Medicare

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

22 suppliers69 claims230 services$6.39 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

11 suppliers24 claims44 services$1.09 avg. paid by Medicare

External ambulatory infusion pump, insulin E0784

DME-Other DME · category DE017N

2 suppliers13 claims13 services$305.95 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

15 suppliers555 claims556 services$186.10 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 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DAVID AHN, M.D., INC

Internal Medicine (Endocrinology, Diabetes & Metabolism)