Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Daniel Joseph Otterson , MD

Internal Medicine โ€ข Irvine, CA

Active NPI 1093210973 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

1 Medical Plaza Drive
Irvine, CA 926974875

Call 9498248600 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1 Medical Plaza Drive

Irvine, CA 926974875

Telephone 9498248600
Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Uc Regents. See the list

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Medical School

Georgetown University School Of Medicine

Graduation Year

2018

Medicare patients

264 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $48,660 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $33,395 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

30-day fills

1,774 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$27,027 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019โ€“2025.

Guide: How to read an Open Payments record

Years since graduation

8 years (graduated 2018)

CMS Doctors and Clinicians data list 2018 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

NPI first issued

2018

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Otterson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Otterson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Irvine and California

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Internal Medicine in Irvine, CA (2024, 62 clinicians with data). Median for this group: 663. Middle half: 301 to 912.

Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: 546. Middle half: 197 to 1,236.

Medicare-allowed amount

Close to the middle for clinicians listed under Internal Medicine in Irvine, CA (2024, 62 clinicians with data). Median for this group: $51,093. Middle half: $30,340 to $87,196.

Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: $57,258. Middle half: $20,378 to $125,504.

Paid by Medicare

Close to the middle for clinicians listed under Internal Medicine in Irvine, CA (2024, 62 clinicians with data). Median for this group: $35,898. Middle half: $21,129 to $65,167.

Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: $43,360. Middle half: $14,871 to $95,733.

Medicare Part D prescriptions

Close to the middle for clinicians listed under Internal Medicine in Irvine, CA (2024, 93 clinicians with data). Median for this group: 727. Middle half: 184 to 2,983.

Close to the middle for clinicians listed under Internal Medicine in California (2024, 10,856 clinicians with data). Median for this group: 1,234. Middle half: 145 to 4,216.

Part D drug cost

Close to the middle for clinicians listed under Internal Medicine in Irvine, CA (2024, 93 clinicians with data). Median for this group: $42,308. Middle half: $7,101 to $207,797.

A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in California (2024, 10,856 clinicians with data). Median for this group: $86,595. Middle half: $7,293 to $305,458.

154 active clinicians are listed under Internal Medicine with a practice address in Irvine, CA (17,897 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Irvine

29.2% of these 154 clinicians have the CMS telehealth indicator.

64.3% of these 154 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ€“2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2022โ€“2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
256 177 $430.00 $90.03
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
198 129 $79.00 $18.27
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
69 62 $291.00 $65.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
66 66 $739.00 $143.43
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
47 38 $633.00 $120.51
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
27 27 $586.00 $51.97
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
16 16 $769.00 $59.79

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 116 9,780 $1,030.94 46
Amlodipine Besylate Amlodipine Besylate 52 4,350 $344.90 21
Rosuvastatin Calcium Rosuvastatin Calcium 48 4,320 $868.73 23
Losartan Potassium Losartan Potassium 46 3,930 $562.89 17
Levothyroxine Sodium Levothyroxine Sodium 39 3,369 $733.99 17
Lisinopril Lisinopril 35 3,090 $313.97 15
Tamsulosin Hcl Tamsulosin Hcl 29 2,475 $524.45 12
Hydrochlorothiazide Hydrochlorothiazide 28 2,190 $42.53 โ€”
Carvedilol Carvedilol 24 1,880 $94.96 โ€”
Ventolin Hfa Albuterol Sulfate 24 512 $1,332.13 โ€”
Omeprazole Omeprazole 19 1,590 $336.23 โ€”
Albuterol Sulfate Hfa Albuterol Sulfate 19 403 $459.73 11
Furosemide Furosemide 18 840 $31.55 โ€”
Metoprolol Succinate Metoprolol Succinate 18 1,140 $450.16 โ€”
Trazodone Hcl Trazodone Hcl 18 1,320 $230.44 โ€”
Donepezil Hcl Donepezil Hcl 17 1,290 $303.35 โ€”
Metformin Hcl Metformin Hcl 17 1,485 $85.38 โ€”
Pantoprazole Sodium Pantoprazole Sodium 17 1,410 $112.83 โ€”
Simvastatin Simvastatin 15 870 $110.30 โ€”
Gabapentin Gabapentin 14 875 $183.62 โ€”
Trulicity Dulaglutide 14 504 $17,140.68 โ€”
Sertraline Hcl Sertraline Hcl 13 870 $70.59 โ€”
Diclofenac Sodium Diclofenac Sodium 13 338 $205.44 โ€”
Lorazepam Lorazepam 13 361 $127.36 โ€”
Famotidine Famotidine 13 1,065 $149.63 โ€”

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2022-07-13
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES CA 178820

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Pediatrics

NUCC Taxonomy Code: 208000000X

License # reported to NPPES CA 178820

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20220811002537

Enrollment State Jurisdiction

CA

PECOS Control ID

8325477698

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Uc Regents

101 The City Dr S, Orange, CA 928683201

Phone: 7144567004

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

26 listed
Dr. Anna Betlachin , MD

Internal Medicine - Endocrinology, Diabetes & Metabolism

NPI 1396190567

Doctor of Medicine (M.D.)

Andrew Bierman , FNP-C

Nurse Practitioner - Family

NPI 1306408505

Family Nurse Practitioner (Certified)

Dr. Patrick Chen , MD

Psychiatry & Neurology - Neurocritical Care

NPI 1295198000

Doctor of Medicine (M.D.)

NPI 1255864021

Doctor of Medicine (M.D.)

NPI 1912931403

Doctor of Medicine (M.D.)

NPI 1053473090

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

11 Historical Events
๐Ÿ“
Updated Business Mailing Address March 21, 2023

Registered at 200 S MANCHESTER AVE STE 300, ORANGE, CA 928683219 (Tel: 7144562986)

๐Ÿ‘ค
Provider Name / Credentials Updated March 21, 2023

Recorded as DANIEL OTTERSON, MD

๐Ÿ“
Updated Practice Location July 06, 2022

Registered at 1 MEDICAL PLAZA DRIVE, IRVINE, CA 926974875 (Tel: 9498248600)

๐Ÿ“
Updated Business Mailing Address July 06, 2022

Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7144563517)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 06, 2022

Pediatrics (license number reported to NPPES: CA 178820)

โœ…
NPI Profile Active March 24, 2018

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) March 24, 2018

Registered at 999 N 92ND ST, MILWAUKEE, WI 532264875 (Tel: 4143377030)

๐Ÿ“
Business Mailing Address (Initial Record) March 24, 2018

Registered at 999 N 92ND ST, MILWAUKEE, WI 532264875 (Tel: 4143377030)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) March 24, 2018

Recorded as DANIEL OTTERSON

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 24, 2018

Student in an Organized Health Care Education/Training Program

๐ŸŸข
Initial NPI Registration & Enumeration March 24, 2018

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1093210973
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 24, 2018
Last Update: March 21, 2023
Sole Proprietor: No

Other Internal Medicine Providers in Irvine

All Internal Medicine Providers in Irvine

Mailing Address

200 S Manchester Ave Ste 300

Orange, CA 928683219

Phone: 7144562986

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.