Dr. Joseph Dellinger , MD
Internal Medicine โข Pasadena, CA
100 W California Blvd
Pasadena, CA 911053010
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Joseph Dellinger is listed in NPPES under Internal Medicine.
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NPI assigned on May 16, 2014; this date does not establish years in practice.
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Published CMS data list 692 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 332 service units.
- 99214 โ Established patient outpatient office visit: 80 service units.
- 99239 โ Hospital discharge day management: 79 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 8 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 53 Medicare Part D prescriptions, including refills, in 2018.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Published rows only; this is not a quality measure.
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Published Part D records, 2018:
- Atorvastatin Calcium โ 15 prescription fills, including refills.
- Amlodipine Besylate โ 13 prescription fills, including refills.
- Carvedilol โ 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Pasadena, CA (2024, 73 clinicians with data). Median for this group: 469. Middle half: 171 to 1,452.
Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: 547. Middle half: 197 to 1,242.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 594 in 2020 to 692 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
100 W California Blvd
Pasadena, CA 911053010
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Cedars-Sinai Medical Care Foundation; The Huntington Medical Foundation. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Texas Tech University Health Science Center School Of Medicine
2013
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
185 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $66,653 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 $51,172 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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
53 standardized 30-day fills in 2018
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
$333 in 2018
The total cost of these prescriptions in 2018, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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, 2018.
Open Payments general payments, program year 2025
All general payments: $14,591.67 across 15 records.
By nature of payment
- Consulting Fee: $14,591.67 across 15 records.
Reporting-company totals
- AstraZeneca Pharmaceuticals LP: $13,741.67 across 14 records.
- AstraZeneca Pharmaceuticals LP: $850.00 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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.
NPI first issued
2014
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
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.
Enrolled in Medicare (PECOS)
Dr. Dellinger 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.
Can order Medicare-covered services
CMS lists Dr. Dellinger 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Pasadena 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 Pasadena, CA (2024, 73 clinicians with data). Median for this group: 469. Middle half: 171 to 1,452.
Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: 547. Middle half: 197 to 1,242.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Pasadena, CA (2024, 73 clinicians with data). Median for this group: $55,294. Middle half: $19,537 to $148,970.
Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: $57,391. Middle half: $20,415 to $125,751.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Pasadena, CA (2024, 73 clinicians with data). Median for this group: $43,050. Middle half: $14,582 to $118,376.
Close to the middle for clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: $43,431. Middle half: $14,887 to $95,905.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Dellinger are from 2018.
138 active clinicians are listed under Internal Medicine with a practice address in Pasadena, CA (17,717 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Pasadena
34.8% of these 138 clinicians have the CMS telehealth indicator.
63.8% of these 138 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 16% from 594 in 2020 to 692 in 2024.
- 2020: 594
- 2021: 452
- 2022: 410
- 2023: 659
- 2024: 692
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Medicare-allowed amount
Medicare-allowed amount increased 13% from $59,046 in 2020 to $66,653 in 2024.
- 2020: $59,046
- 2021: $47,096
- 2022: $40,077
- 2023: $65,783
- 2024: $66,653
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Paid by Medicare
Paid by Medicare varied from year to year: $46,846 in 2020 and $51,172 in 2024.
- 2020: $46,846
- 2021: $37,520
- 2022: $30,441
- 2023: $50,106
- 2024: $51,172
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 24% from 70 in 2015 to 53 in 2018.
- 2015: 70
- 2016: 174
- 2017: 132
- 2018: 53
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30-day fills
30-day fills decreased 26% from 72 in 2015 to 53 in 2018.
- 2015: 72
- 2016: 189
- 2017: 153
- 2018: 53
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Part D drug cost
Part D drug cost decreased 99% from $27,121 in 2015 to $333 in 2018.
- 2015: $27,121
- 2016: $1,786
- 2017: $1,136
- 2018: $333
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 13% from $16,682.14 in 2021 to $14,591.67 in 2025.
- 2021: $16,682.14
- 2022: $19,455.32
- 2023: $14,174.07
- 2024: $18,898.34
- 2025: $14,591.67
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2018), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 15 records totaling $14,591.67.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
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โ | General | $2,125.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $1,133.34 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
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โ | General | $1,133.33 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
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โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
|
โ | General | $850.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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 |
|---|---|---|---|---|
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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332 | 88 | $167.59 | $81.36 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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80 | 45 | $207.39 | $101.04 |
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99239
Hospital discharge day management, more than 30 minutes
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79 | 76 | $245.28 | $119.32 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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72 | 24 | $104.43 | $50.94 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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71 | 70 | $367.25 | $178.95 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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36 | 24 | $140.22 | $68.47 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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11 | 11 | $277.27 | $134.75 |
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99235
Initial hospital care with same-day admission and discharge with moderate level of medical decision making, per day, if using time, at least 70 minutes
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11 | 11 | $336.36 | $164.71 |
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 2018.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 15 | 434 | $137.80 | โ |
| Amlodipine Besylate | Amlodipine Besylate | 13 | 390 | $53.30 | โ |
| Carvedilol | Carvedilol | 13 | 390 | $74.68 | โ |
| Pantoprazole Sodium | Pantoprazole Sodium | 12 | 360 | $66.87 | โ |
Source: CMS Part D by Provider and Drug, 2018; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-06-24NUCC Taxonomy Code: 207R00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20160818002462
CA
1557656329
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
The Huntington Medical Foundation
100 W California Blvd, Pasadena, CA 911053010
Phone: 6263978369
Cedars-Sinai Medical Care Foundation
100 W California Blvd, Pasadena, CA 911053010
Phone: 3106657200
The Huntington Medical Foundation
65 N Madison Ave, Pasadena, CA 911012038
Phone: 6267923141
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Hospitalist
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner
Nurse Practitioner
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Physical Medicine & Rehabilitation
Doctor of Osteopathic Medicine (D.O.)
Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 111 S DE LACEY AVE UNIT 316, PASADENA, CA 911054144 (Tel: 8177263701)
Recorded as JOSEPH DELLINGER, MD
Internal Medicine (license number reported to NPPES: CA A136886)
NPI status registered as active in NPPES database
Registered at 100 W CALIFORNIA BLVD, PASADENA, CA 911053010 (Tel: 6263975000)
Registered at 1050 INGRAHAM ST, UNIT 637, LOS ANGELES, CA 900171989 (Tel: 8177263701)
Recorded as JOSEPH DELLINGER
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Pasadena
- Dr. Marilynn Moore, MD
- Dr. Todd Hee, MD
- Salwa Farag
- Dr. Zetha Sovyanhadi, MD
- Dr. Robert Siew, MD
- Dr. Prabhat Mukerjee, MD
Mailing Address
111 S De Lacey Ave Unit 316
Pasadena, CA 911054144
Phone: 8177263701