Michael Stephen Massey
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 50
- MIPS score, 2024
- 81
- Hospital affiliations
- 1
- Medical groups
- 3
- Practice address
- 2801 Atlantic Ave, Long Beach, CA 90806
- Practice phone
- Call (562) 933-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Michael Stephen Massey is an anesthesiologist in Long Beach, California
Michael Massey practices at Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System.
Michael Massey's NPI, 1568923308, was assigned on March 26, 2019. Michael Massey graduated from University of Maryland School of Medicine in 2019. Michael Massey holds Pennsylvania license MD483560.
- NPI
- 1568923308NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274866850
- NPI enumeration date
- March 26, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (562) 933-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael Stephen Massey practices at Long Beach Medical Center in Long Beach, California
Michael Massey's primary practice is Long Beach Medical Center, at 2801 Atlantic Ave, Long Beach, CA 90806 in Los Angeles County. The practice phone is (562) 933-2000.
- Long Beach Medical Center2801 Atlantic Ave, Long Beach, CA 90806 · Los Angeles CountyPhone(562) 933-2000
Source: Dmand AI Affiliation Data
Michael Stephen Massey is affiliated with 3 sites of care and 3 medical groups
Michael Massey's primary practice is Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System. The medical group on file is CEP America. Dmand AI also links Michael Massey to 2 more medical groups, 1 group practice or clinic and 1 therapy and rehab clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Michael Stephen Massey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Massey practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Long Beach Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael Stephen Massey is one of 6,593 anesthesiologists in California
Anesthesiology is Michael Massey's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Michael Massey is licensed in Pennsylvania.
Specialties and state licenses
- Anesthesiology, PennsylvaniaPrimary
Anesthesiologists near Michael Massey
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
Michael Stephen Massey billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Michael Massey across 1 procedure code in 2024, for 50 Medicare patients. Medicare paid $800 for them. Every service was in a facility, such as a hospital, rather than an office.
Michael Massey compared with the California median for anesthesiologists, 2024
- Michael Massey
- California median
- Medicare services
- 24vs 7267% below
- Medicare patients
- 50vs 14365% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Michael Massey'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Michael Stephen Massey treated 50 Medicare patients in 2024, average age 69
CMS counts 50 Medicare patients who saw Michael Massey in 2024. The largest group is 65 to 74, with 26 patients. 75% of them have high blood pressure, and 74% have high cholesterol. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Michael Massey's median patient age at 64, with 47% women.
Michael Massey's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Michael Massey's Medicare patients by sex, 2024
- Women2346%
- Men2754%
Chronic conditions among Michael Massey's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis56%
- Ischemic heart disease52%
- Anxiety50%
- Mood disorders44%
- Heart failure42%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Michael Massey's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael Stephen Massey scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Michael Massey for performance year 2024, reported as part of a group. Michael Massey accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Michael Massey's MIPS scores, performance year 2024
- 81of 100Final score
- 61.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Michael Stephen Massey graduated from University of Maryland School of Medicine
Michael Massey graduated from University of Maryland School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael Stephen Massey'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Michael Stephen Massey
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael Stephen Massey's NPI number?
Michael Stephen Massey's NPI number is 1568923308. It was assigned on March 26, 2019, and it is active in the NPI Registry.
What does Michael Stephen Massey specialize in?
Michael Stephen Massey is an anesthesiologist in Long Beach, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Michael Stephen Massey practice?
Michael Massey practices at 2801 Atlantic Ave, Long Beach, CA 90806. Michael Massey's primary practice is Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System. Dmand AI also links Michael Massey to 2 medical groups, 1 group practice or clinic and 1 therapy and rehab clinic.
What is Michael Stephen Massey's office phone number?
The practice phone on file for Michael Massey is (562) 933-2000.
What is Michael Stephen Massey's medical license number?
Michael Massey holds Pennsylvania license MD483560.
Which hospitals is Michael Stephen Massey affiliated with?
Michael Massey practices at Long Beach Medical Center in Long Beach, California.
What medical group is Michael Stephen Massey part of?
Michael Massey is linked to CEP America. Dmand AI links Michael Massey to 2 more medical groups.
Does Michael Stephen Massey accept Medicare?
Yes. CMS data shows Michael Massey billed Medicare for 24 services in 2024, and Michael Massey accepts Medicare assignment.
What is Michael Stephen Massey's MIPS score?
Michael Massey's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Michael Stephen Massey see?
CMS counts 50 Medicare patients who saw Michael Massey in 2024, with an average age of 69.
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What services does Michael Stephen Massey bill to Medicare?
In 2024, Michael Massey's most billed Medicare services were surgery: heart and blood vessels (36620).
Where did Michael Stephen Massey go to medical school?
Michael Massey graduated from University of Maryland School of Medicine in 2019.
How long has Michael Stephen Massey been practicing?
Michael Massey graduated from medical school in 2019, 7 years ago.
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