Blood Cancer J
Hematopoietic Stem Cell TransplantationLeukemia, Myeloid, Acute
Dr. John J. Lim, MD
NPI1316329782PAC ID4385972314
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 414
- Publications
- 7
- Hospital affiliations
- 2
- Practice address
- 2600 Redondo Avenue, Long Beach, CA 90806
- Practice phone
- Call (562) 988-7147
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optum Surgery Center - Long Beach
Surgery Center - Medicare-Certified · Long Beach, California
Find Dr. Lim's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John J. Lim is an internist in Long Beach, California
Dr. Lim practices at Optum Surgery Center - Long Beach in Long Beach, California.
Dr. Lim's NPI, 1316329782, was assigned on June 22, 2015. Dr. Lim graduated from Pritzker School of Medicine in 2015. Dr. Lim holds California license A145184.
NPI and contact details
- NPI
- 1316329782NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385972314
- NPI enumeration date
- June 22, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (562) 988-7147
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John J. Lim practices at Optum Surgery Center - Long Beach in Long Beach, California
Dr. Lim's primary practice is Optum Surgery Center - Long Beach, at 2600 Redondo Avenue, Long Beach, CA 90806. The practice phone is (562) 988-7147.
- Optum Surgery Center - Long Beach2600 Redondo Avenue, Long Beach, CA 90806Phone(562) 988-7147
Source: Dmand AI Affiliation Data
Dr. John J. Lim is affiliated with 5 sites of care and 1 medical group
Dr. Lim's primary practice is Optum Surgery Center - Long Beach in Long Beach, California. Dr. Lim is also affiliated with UC Davis Medical Center. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Lim to 1 more hospital, 1 group practice or clinic and 1 home health agency, each named with a free account.
Optum Surgery Center - Long BeachPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John J. Lim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lim practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optum Surgery Center - Long Beach | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Lim practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John J. Lim is one of 16,751 internists in California
Internal medicine is Dr. Lim's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lim is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Lim's licenses on file in 2 states: California and Washington.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Washington license
Internists near Dr. Lim
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John J. Lim billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Dr. Lim across 1 procedure code in 2024, all of them office visits, for 39 Medicare patients. Medicare paid $1,898 for them. Every service was in an office.
Medicare services, 202424
Medicare patients39
Paid by Medicare$1,898
Procedure codes1
Dr. Lim's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Office and hospital visits
- 2022: 572024: 2458%
Dr. Lim compared with the California median for internists, 2024
- Dr. Lim
- California median
- Medicare services
- 24vs 36193% below
- Medicare patients
- 39vs 15174% below
- Part D claims
- 103vs 42176% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Lim's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Lim?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lim and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John J. Lim treated 39 Medicare patients in 2024, average age 72
CMS counts 39 Medicare patients who saw Dr. Lim in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have high blood pressure, and 72% have high cholesterol. Their average risk score is 1.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lim's median patient age at 69, with 55% women.
Medicare patients, 202439
Average age72
Average risk score1.74
Dr. Lim's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lim's Medicare patients by sex, 2024
- Women2051%
- Men1949%
Chronic conditions among Dr. Lim's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis38%
- Diabetes38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lim's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John J. Lim wrote 414 Medicare Part D claims in 2024
In 2024, Dr. Lim wrote 414 Medicare Part D claims for 209 patients. 94% of them were for generic drugs. CMS names the drug for 103 of them, across 6 drugs with 11 or more claims each, at $471 in total drug cost. In 2019, CMS named 807 claims across 27 drugs.
Part D claims, 2024414
Drugs named by CMS6
Total drug cost$471
Part D patients209
Dr. Lim's Part D claims by kind of drug, 2024
- Generic388 claims94%
- Brand-name and other26 claims6%
Dr. Lim's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lim's Part D claims, 2024
- Opioids4%15 of 414 claims
- Antibiotics12%51 of 414 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 8072024: 10387%
Drugs named by CMS: 6 in 2024, 27 in 2019.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John J. Lim offers telehealth to Medicare patients
Dr. Lim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lim as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find internists like Dr. Lim by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John J. Lim has 7 publications on record
Dmand AI links 7 papers to Dr. Lim, published from 2014 to 2024. The most frequent topics are Colon, Leukemia, Myeloid, Acute and Proto-Oncogene Proteins. Dr. Lim's most frequent co-authors are Anna B. Halpern, MD, Paul Curtis Hendrie, MD, PhD and Roland B. Walter, MD, PhD.
Papers7
Years published2014 to 2024
Dr. Lim's papers by year, 2014 to 2024
Topics Dr. Lim writes about most
- Colon
- Leukemia, Myeloid, Acute
- Proto-Oncogene Proteins
Dr. Lim's most frequent co-authors
- Anna B. Halpern, MD2 shared papers
- Paul Curtis Hendrie, MD, PhD2 shared papers
- Roland B. Walter, MD, PhD2 shared papers
Recent publications by Dr. Lim
Antineoplastic Combined Chemotherapy ProtocolsCladribineCytarabine
Ann Otol Rhinol Laryngol
CholesteatomaEar DiseasesEar, Inner
Antigens, CDCadherinsColitis, Ulcerative
Am J Physiol Gastrointest Liver Physiol
Apoptosis Regulatory ProteinsCell CycleCell Line, Tumor
See who Dr. Lim researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lim works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John J. Lim received $111 in industry payments from 2018 to 2021
CMS Open Payments shows 5 general payments to Dr. Lim from 5 drug and device companies from 2018 to 2021. Food and beverage make up the largest share, 100% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $25.
General payments to Dr. Lim by program year, 2018 to 2021
Companies that paid Dr. Lim the most, 2018 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John J. Lim graduated from Pritzker School of Medicine
Dr. Lim graduated from Pritzker School of Medicine in 2015.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John J. Lim accepts plans from 12 insurance carriers
Dr. Lim is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- AK State Medicaid
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +4 more carriersWith a free account
Plan types Dr. Lim accepts, by number of carriers
- Medicare6
- PPO6
- POS4
- HMO3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. John J. Lim's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John J. Lim
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John J. Lim's NPI number?
Dr. John J. Lim's NPI number is 1316329782. It was assigned on June 22, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. John J. Lim?
Dr. John J. Lim is an internist in Long Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John J. Lim practice?
Dr. Lim practices at 2600 Redondo Avenue, Long Beach, CA 90806. Dr. Lim's primary practice is Optum Surgery Center - Long Beach in Long Beach, California. Dmand AI also links Dr. Lim to 1 hospital, 1 group practice or clinic and 1 home health agency.
What is Dr. John J. Lim's office phone number?
The practice phone on file for Dr. Lim is (562) 988-7147.
What is Dr. John J. Lim's medical license number?
Dr. Lim holds California license A145184, one of the licenses on file in 2 states.
Which states has Dr. John J. Lim been licensed in?
Dmand AI has state licenses on file for Dr. Lim in California (2016 to 2026) and Washington (2020 to 2025).
Which hospitals is Dr. John J. Lim affiliated with?
Dr. Lim is affiliated with UC Davis Medical Center. Dmand AI links Dr. Lim to 1 more hospital.
What medical group is Dr. John J. Lim part of?
Dr. Lim is linked to Optum - Downtown Los Angeles.
Does Dr. John J. Lim accept Medicare?
Yes. CMS data shows Dr. Lim billed Medicare for 24 services in 2024, and Dr. Lim accepts Medicare assignment.
Does Dr. John J. Lim offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lim as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. John J. Lim see?
CMS counts 39 Medicare patients who saw Dr. Lim in 2024, with an average age of 72.
Is Dr. John J. Lim board certified?
Yes. Dr. Lim is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. John J. Lim bill to Medicare?
In 2024, Dr. Lim's most billed Medicare services were office visit, established patient (99213).
Where did Dr. John J. Lim go to medical school?
Dr. Lim graduated from Pritzker School of Medicine in 2015.
What drugs does Dr. John J. Lim prescribe most?
In 2024 Medicare Part D data, Dr. Lim's most prescribed drugs by claims were Lisinopril, Azithromycin and Prednisone.
Has Dr. John J. Lim received payments from drug or device companies?
CMS Open Payments shows $111 in general payments to Dr. Lim from 5 companies from 2018 to 2021. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. John J. Lim been practicing?
Dr. Lim graduated from medical school in 2015, 11 years ago.
Does Dr. John J. Lim do research?
Dmand AI links 7 publications to Dr. Lim, published from 2014 to 2024.
Who does Dr. John J. Lim publish with?
Dr. Lim's most frequent co-authors are Anna B. Halpern, MD (2 shared papers), Paul Curtis Hendrie, MD, PhD (2 shared papers) and Roland B. Walter, MD, PhD (2 shared papers).
What insurance does Dr. John J. Lim accept?
Dr. Lim is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card