Dr. Chima Sean Nzerem, DO
- Medicare services, 2023
- 13
- Medicare patients, 2024
- 84
- Hospital affiliations
- 2
- Industry payments
- $23
- Medical group
- 1
- Practice address
- 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345
- Practice phone
- Call (818) 898-4630
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sub-Acute Care Center
Skilled Nursing Facility - Hospital-Based · Mission Hills, California
Find Dr. Nzerem'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. Chima Sean Nzerem is an anesthesiologist in Mission Hills, California
Dr. Nzerem practices at Sub-Acute Care Center in Mission Hills, California.
Dr. Nzerem's NPI, 1821386848, was assigned on July 11, 2011. Dr. Nzerem graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Nzerem holds California license 20A13808.
- NPI
- 1821386848NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284948282
- NPI enumeration date
- July 11, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 898-4630
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chima Sean Nzerem practices at 2 locations in Mission Hills, California
Dr. Nzerem's primary practice is Sub-Acute Care Center, at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 in Los Angeles County. The practice phone is (818) 898-4630. Dr. Nzerem also practices at Providence Holy Cross Medical Center, 15031 W Rinaldi St, Mission Hills, CA 91345.
- Sub-Acute Care CenterPrimary11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 898-4630
- Providence Holy Cross Medical Center15031 W Rinaldi St, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 496-1735
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Chima Sean Nzerem is affiliated with 3 sites of care and 1 medical group
Dr. Nzerem's primary practice is Sub-Acute Care Center in Mission Hills, California. Dr. Nzerem is also affiliated with Providence Holy Cross Medical Center. The medical group on file is Buena Vista Anesthesia Medical Group. Dmand AI also links Dr. Nzerem to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chima Sean Nzerem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nzerem practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sub-Acute Care Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chima Sean Nzerem is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Nzerem's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Nzerem is board certified in anesthesiology by the AOA Board of Anesthesiology. Dr. Nzerem is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Dr. Nzerem
Counts of anesthesiologists 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. Chima Sean Nzerem billed Medicare for 13 services in 2023
CMS data shows 13 Medicare services from Dr. Nzerem across 1 procedure code in 2023, for 84 Medicare patients. Medicare paid $1,394 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nzerem's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Anesthesia
- 2022: 322023: 1359%
Dr. Nzerem compared with the California median for anesthesiologists, 2023
- Dr. Nzerem
- California median
- Medicare services
- 13vs 7282% below
- Medicare patients
- 84vs 14341% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Nzerem's most billed Medicare procedure codes, 2023
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. Nzerem?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nzerem and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chima Sean Nzerem treated 84 Medicare patients in 2024, average age 74
CMS counts 84 Medicare patients who saw Dr. Nzerem in 2024. The largest group is 65 to 74, with 35 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 1.91, 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. Nzerem's median patient age at 38, with 78% women.
Dr. Nzerem's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nzerem's Medicare patients by sex, 2024
- Women4756%
- Men3744%
Chronic conditions among Dr. Nzerem's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Diabetes49%
- Ischemic heart disease38%
- Anxiety33%
- Mood disorders33%
- Chronic kidney disease31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nzerem's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women78%
- Men22%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Chima Sean Nzerem takes part in Medicare
Dr. Nzerem accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chima Sean Nzerem received $23 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Nzerem from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Mallinckrodt LLC paid the most, $23.
Companies that paid Dr. Nzerem the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chima Sean Nzerem graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Nzerem graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Nzerem is a member of AOA.
- Medical school
- Board certified in anesthesiology
- Board certified in 2015 - 2026
- Board certified in 2015 - 2018
- Board certified in 2011 - 2015
Source: Dmand AI Professional Profile Data
Dr. Chima Sean Nzerem accepts plans from 7 insurance carriers
Dr. Nzerem is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
- Molina
Plan types Dr. Nzerem accepts, by number of carriers
- Medicare3
- PPO3
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chima Sean Nzerem'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Chima Sean Nzerem
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. Chima Sean Nzerem's NPI number?
Dr. Chima Sean Nzerem's NPI number is 1821386848. It was assigned on July 11, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Chima Sean Nzerem?
Dr. Chima Sean Nzerem is an anesthesiologist in Mission Hills, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Chima Sean Nzerem practice?
Dr. Nzerem practices at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345. Dr. Nzerem also practices at 15031 W Rinaldi St, Mission Hills, CA 91345. Dr. Nzerem's primary practice is Sub-Acute Care Center in Mission Hills, California. Dmand AI also links Dr. Nzerem to 1 hospital.
What is Dr. Chima Sean Nzerem's office phone number?
The practice phone on file for Dr. Nzerem is (818) 898-4630.
What is Dr. Chima Sean Nzerem's medical license number?
Dr. Nzerem holds California license 20A13808.
Which hospitals is Dr. Chima Sean Nzerem affiliated with?
Dr. Nzerem is affiliated with Providence Holy Cross Medical Center. Dmand AI links Dr. Nzerem to 1 more hospital.
What medical group is Dr. Chima Sean Nzerem part of?
Dr. Nzerem is linked to Buena Vista Anesthesia Medical Group.
Does Dr. Chima Sean Nzerem accept Medicare?
Yes. CMS data shows Dr. Nzerem billed Medicare for 13 services in 2023, and Dr. Nzerem accepts Medicare assignment.
How many Medicare patients does Dr. Chima Sean Nzerem see?
CMS counts 84 Medicare patients who saw Dr. Nzerem in 2024, with an average age of 74.
Is Dr. Chima Sean Nzerem board certified?
Yes. Dr. Nzerem is board certified in anesthesiology by the AOA Board of Anesthesiology.
Show 5 more questionsShow fewer questions
What services does Dr. Chima Sean Nzerem bill to Medicare?
In 2023, Dr. Nzerem's most billed Medicare services were anesthesia (00731).
Where did Dr. Chima Sean Nzerem go to medical school?
Dr. Nzerem graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010.
Has Dr. Chima Sean Nzerem received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Nzerem from 1 company from 2016 to 2016. The largest total came from Mallinckrodt LLC.
How long has Dr. Chima Sean Nzerem been practicing?
Dr. Nzerem graduated from medical school in 2010, 16 years ago.
What insurance does Dr. Chima Sean Nzerem accept?
Dr. Nzerem is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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