Dr. Johnnie L. Mao, MD
- Medicare services, 2024
- 940
- Medicare patients, 2024
- 422
- Part D claims, 2024
- 438
- MIPS score, 2024
- 97
- Hospital affiliations
- 5
- Practice address
- 1736 Hamilton St, Allentown, PA 18104
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Allentown Campus - Interventional Radiology Unit - HOPD
Acute Care Hospital outpatient department · Allentown, Pennsylvania
Find Dr. Mao'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. Johnnie L. Mao is an internist in Allentown, Pennsylvania
Dr. Mao practices at Allentown Campus - Interventional Radiology Unit - HOPD in Allentown, Pennsylvania.
Dr. Mao's NPI, 1710410071, was assigned on April 4, 2017. Dr. Mao holds Pennsylvania license MD470972.
- NPI
- 1710410071NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527336379
- NPI enumeration date
- April 4, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Johnnie L. Mao practices at Allentown Campus - Interventional Radiology Unit - HOPD in Allentown, Pennsylvania
Dr. Mao's primary practice is Allentown Campus - Interventional Radiology Unit - HOPD, at 1736 Hamilton St, Allentown, PA 18104.
- Allentown Campus - Interventional Radiology Unit - HOPD1736 Hamilton St, Allentown, PA 18104
Source: Dmand AI Affiliation Data
Dr. Johnnie L. Mao is affiliated with 7 sites of care and 3 medical groups
Dr. Mao's primary practice is Allentown Campus - Interventional Radiology Unit - HOPD in Allentown, Pennsylvania. Dr. Mao is also affiliated with St. Luke's University Hospital - Bethlehem Campus. The medical group on file is St. Luke's South Mountain Family Practice. Dmand AI also links Dr. Mao to 4 more hospitals, 2 medical groups and 1 home health agency, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Johnnie L. Mao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mao practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Allentown Campus - Interventional Radiology Unit - HOPD | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Johnnie L. Mao is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Mao's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mao is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Mao
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. Johnnie L. Mao billed Medicare for 940 services in 2024
CMS data shows 940 Medicare services from Dr. Mao across 6 procedure codes in 2024, for 422 Medicare patients. Medicare paid $74,645 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,1082024: 92017%
- Other services
- 2023: 112024: 2082%
Dr. Mao compared with the Pennsylvania median for internists, 2024
- Dr. Mao
- Pennsylvania median
- Medicare services
- 940vs 4172.3 times
- Medicare patients
- 422vs 1852.3 times
- Part D claims
- 162vs 22428% below
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Mao'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
Dr. Johnnie L. Mao treated 422 Medicare patients in 2024, average age 76
CMS counts 422 Medicare patients who saw Dr. Mao in 2024. The largest group is 75 to 84, with 135 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 2.71, 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. Mao's median patient age at 73, with 55% women.
Dr. Mao's Medicare patients by age, 2024
Dr. Mao's Medicare patients by sex, 2024
- Women23055%
- Men19245%
Chronic conditions among Dr. Mao's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease63%
- Arthritis58%
- Anxiety56%
- Mood disorders51%
- Diabetes50%
- Depression48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Johnnie L. Mao wrote 438 Medicare Part D claims in 2024
In 2024, Dr. Mao wrote 438 Medicare Part D claims for 208 patients. 88% of them were for generic drugs. CMS names the drug for 162 of them, across 9 drugs with 11 or more claims each, at $974 in total drug cost. In 2023, CMS named 256 claims across 13 drugs.
Dr. Mao's Part D claims by kind of drug, 2024
- Generic386 claims88%
- Brand-name and other52 claims12%
Dr. Mao'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. Mao's Part D claims, 2024
- Opioids4%18 of 438 claims
- Antibiotics19%84 of 438 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2562024: 16237%
Drugs named by CMS: 9 in 2024, 13 in 2023.
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. Johnnie L. Mao scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Mao for performance year 2024, reported through an alternative payment model (APM). Dr. Mao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mao's MIPS scores, performance year 2024
- 97of 100Final score
- 82.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Dr. Johnnie L. Mao received $255 in industry payments from 2021 to 2023
CMS Open Payments shows 3 general payments to Dr. Mao from 3 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $125.
General payments to Dr. Mao by program year, 2021 to 2023
Companies that paid Dr. Mao the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Johnnie L. Mao'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Johnnie L. Mao
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. Johnnie L. Mao's NPI number?
Dr. Johnnie L. Mao's NPI number is 1710410071. It was assigned on April 4, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Johnnie L. Mao?
Dr. Johnnie L. Mao is an internist in Allentown, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Johnnie L. Mao practice?
Dr. Mao practices at 1736 Hamilton St, Allentown, PA 18104. Dr. Mao's primary practice is Allentown Campus - Interventional Radiology Unit - HOPD in Allentown, Pennsylvania. Dmand AI also links Dr. Mao to 4 hospitals, 2 medical groups and 1 home health agency.
What is Dr. Johnnie L. Mao's medical license number?
Dr. Mao holds Pennsylvania license MD470972.
Which hospitals is Dr. Johnnie L. Mao affiliated with?
Dr. Mao is affiliated with St. Luke's University Hospital - Bethlehem Campus. Dmand AI links Dr. Mao to 4 more hospitals.
What medical group is Dr. Johnnie L. Mao part of?
Dr. Mao is linked to St. Luke's South Mountain Family Practice. Dmand AI links Dr. Mao to 2 more medical groups.
Does Dr. Johnnie L. Mao accept Medicare?
Yes. CMS data shows Dr. Mao billed Medicare for 940 services in 2024, and Dr. Mao accepts Medicare assignment.
What is Dr. Johnnie L. Mao's MIPS score?
Dr. Mao's MIPS final score for performance year 2024 is 97 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Johnnie L. Mao see?
CMS counts 422 Medicare patients who saw Dr. Mao in 2024, with an average age of 76.
What services does Dr. Johnnie L. Mao bill to Medicare?
In 2024, Dr. Mao's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
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What drugs does Dr. Johnnie L. Mao prescribe most?
In 2024 Medicare Part D data, Dr. Mao's most prescribed drugs by claims were Cefdinir, Pantoprazole Sodium and Prednisone.
Has Dr. Johnnie L. Mao received payments from drug or device companies?
CMS Open Payments shows $255 in general payments to Dr. Mao from 3 companies from 2021 to 2023. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Johnnie L. Mao been practicing?
Dr. Mao graduated from medical school in 2016, 10 years ago.
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