DR. DANIEL AHN D.O.
NPI 1932416781
Ophthalmology in Sonoma, CA

Q: What is Daniel Ahn's NPI number?

The NPI number for Daniel Ahn is 1932416781. It was assigned to this individual provider in the NPPES registry on August 31, 2010.

Q: What is Daniel Ahn's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Daniel Ahn was last updated on July 31, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 August 31, 2010PECOS EnrolledAccepts Medicare Assignment

81.03/100

CMS Quality Rating

181 ANDRIEUX ST, SUITE 100, SONOMA, CA 95476(707) 588-7939(707) 588-7941 Get Directions Write a Review

NPPES record last updated: July 31, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Daniel Ahn D.o. NPPES

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

DR. DANIEL AHN D.O. (NPI 1932416781) is an individual ophthalmology provider in Sonoma, California, licensed in California (20A12253) and active in the NPI registry since August 2010. He is enrolled in Medicare PECOS, is affiliated with St Luke's Cornwall Hospital, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2008).

NPPES Registry Identity

NPI1932416781

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. DANIEL AHNCredential: D.O.

Location Address181 ANDRIEUX ST, SUITE 100Sonoma, CA 95476-6932

Mailing Address181 Andrieux St, Suite 100Sonoma, CA 95476-6932 · (707) 588-7939 · Fax (707) 588-7941

Phone(707) 588-7939

Fax(707) 588-7941

Sole ProprietorNo

Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 2008

Enumeration DateAugust 31, 2010

Last NPPES UpdateJuly 31, 2012

✔ NPI 1932416781 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

Licenses✔ Licensed in CA · 20A12253✔ Licensed in PA · OT012630

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

181 ANDRIEUX ST, Sonoma, CA 95476

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Daniel Ahn D.o. 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 ID6406010990

PECOS Enrollment IDI20160617001599

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.

Areas of Expertise CMS Part B claims 20

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 complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

903 services707 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

810 services773 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

351 services236 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

316 services270 patients

Exam of the internal drainage system of eye 92020

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

292 services289 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

292 services274 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

261 services242 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

186 services100 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

168 services168 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.

140 services138 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

138 services132 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

116 services65 patients

Ct scan of cornea 92025

A CT scan of the cornea is a non-invasive imaging test that uses X-rays to capture detailed pictures of your eye's cornea. It helps in diagnosing diseases or damage, planning for surgery, or evaluating the results of a treatment. It's a safe and painless procedure.

86 services86 patients

Laser repair to improve eye fluid flow 65855

Laser repair to improve eye fluid flow is a procedure aimed at treating glaucoma. A laser is used to create a small hole in the eye's drainage system, allowing fluid to flow out more easily. This helps to lower the pressure inside the eye, reducing the risk of vision loss.

73 services38 patients

Creation of eye fluid drainage tracts in iris using a laser, per session 66761

This procedure uses a laser to create small drainage tracts in the iris, the colored part of your eye. This helps excess fluid escape, reducing pressure in the eye that can cause glaucoma. It's performed in sessions.

52 services27 patients

Blood test, basic group of blood chemicals (calcium, total) 80048

A basic group blood test measures the levels of certain chemicals in your blood, including calcium. This helps assess your overall health and detect potential problems. The procedure involves drawing a small amount of blood from your arm, which is then analyzed in a lab.

20 services19 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

17 services16 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.

17 services17 patients

Ultrasound scan of cornea to determine thickness 76514

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

15 services15 patients

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.

14 services12 patients

Hospital Affiliations CMS Care Compare

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

St Luke's Cornwall Hospital

Acute Care Hospitals · Newburgh, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number330264

Location70 Dubois StreetNewburgh, NY 12550 · Orange County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95476 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

$142.00 typical visit price

range $63.04 – $187.01

Typical copayment $35.50 (range $15.76 – $46.75)

Most-billed visit code 99204

Established Patient

$77.94 typical visit price

range $21.02 – $153.40

Typical copayment $19.48 (range $5.25 – $38.35)

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.

81.03/100

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

Scored as part of a group practice

Quality

82.76

Promoting Interoperability

Improvement Activities

Cost

69.03

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.

WILLIAM RAAKA, M.D. INC.

Eyewear Supplier

181 ANDRIEUX ST, SUITE 100
SONOMA, CA 95476

Sonoma County (707) 996-1622

ROBERT K KOIDA M.D.

Family Medicine

181 ANDRIEUX ST, SUITE 201
SONOMA, CA 95476

Sonoma County (707) 938-3870

JENNIFER ANN JENSEN L.AC.

Acupuncturist

181 ANDRIEUX ST, #105
SONOMA, CA 95476

Sonoma County (707) 996-6681

WALTER C. PREHN M.D. A PROFESSIONAL CORPORATION

Internal Medicine

181 ANDRIEUX ST, SUITE 206
SONOMA, CA 95476

Sonoma County (707) 495-7762

NASREEN TAYMUREE

Physician Assistant

181 ANDRIEUX ST, SUITE 103
SONOMA, CA 95476

Sonoma County (707) 938-9880

MARGARET FRANCES LEISZ FNP

Nurse Practitioner (Family)

181 ANDRIEUX ST, SUITE #202
SONOMA, CA 95476

Sonoma County (707) 933-0500

DR. ELIOT ADAMS CARTER D.C.

Chiropractor

181 ANDRIEUX ST, SUITE 201
SONOMA, CA 95476

Sonoma County (707) 939-1393

DR. RICHARD LEE DAFFURN D.D.S.

Dentist

181 ANDRIEUX ST, SUITE 104
SONOMA, CA 95476

Sonoma County (707) 996-4585

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 Daniel Ahn's NPI number?

The NPI number for Daniel Ahn is 1932416781. It was assigned to this individual provider in the NPPES registry on August 31, 2010.

Where is Daniel Ahn located?

Daniel Ahn practices at 181 Andrieux St Suite 100, Sonoma, CA 95476. The listed phone number is (707) 588-7939.

What is Daniel Ahn's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Daniel Ahn enrolled in Medicare?

Yes. Daniel Ahn 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.

Is Daniel Ahn affiliated with any hospitals?

According to CMS data, Daniel Ahn is affiliated with St Luke's Cornwall Hospital.

When was this NPI record last updated?

The NPPES record for Daniel Ahn was last updated on July 31, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.