J Clin Invest
Amino Acid SubstitutionCell Line, TumorHematologic Neoplasms
Dr. Peter S. Klein, MD, PhD
NPI1467495788PAC ID6709832595
- Medicare services, 2023
- 30
- Medicare patients, 2024
- 17
- Publications
- 41
- MIPS score, 2024
- 85
- Hospital affiliations
- 1
- Practice address
- 3400 Spruce St, Philadelphia, PA 19104
- Practice phone
- Call (215) 662-6289
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Peter S. Klein is a hematology (internal medicine) physician in Philadelphia, Pennsylvania
Dr. Klein practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania.
Dr. Klein's NPI, 1467495788, was assigned on June 14, 2006. Dr. Klein graduated from Johns Hopkins University School of Medicine in 1988. Dr. Klein holds Pennsylvania license MD055837L.
NPI and contact details
- NPI
- 1467495788NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709832595
- NPI enumeration date
- June 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (215) 662-6289
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter S. Klein practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania
Dr. Klein's primary practice is Hospital of the University of Pennsylvania, at 3400 Spruce St, Philadelphia, PA 19104 in Philadelphia County. The practice phone is (215) 662-6289.
- Hospital of the University of Pennsylvania3400 Spruce St, Philadelphia, PA 19104 · Philadelphia CountyPhone(215) 662-6289
Source: Dmand AI Affiliation Data
Dr. Peter S. Klein is affiliated with 1 site of care and 1 medical group
Dr. Klein's primary practice is Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania. The medical group on file is Penn Medicine Lancaster General Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Peter S. Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital of the University of Pennsylvania | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Peter S. Klein is one of 53 hematology (internal medicine) physicians in Pennsylvania
Internal medicine is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 207RH0000X. The record also lists hematology. Dr. Klein is licensed in Pennsylvania.
Specialties and state licenses
- Hematology (internal medicine), PennsylvaniaPrimary
Hematology (internal medicine) physicians near Dr. Klein
Counts of hematology (internal medicine) physicians with a Dmand AI profile, by place and practice. Each opens the list.
53hematology (internal medicine) physicians in Pennsylvania29hematology (internal medicine) physicians in Philadelphia12hematology (internal medicine) physicians at Hospital of the University of Pennsylvania
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Peter S. Klein billed Medicare for 30 services in 2023
CMS data shows 30 Medicare services from Dr. Klein across 2 procedure codes in 2023, for 17 Medicare patients. Medicare paid $3,674 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202330
Medicare patients17
Paid by Medicare$3,674
Procedure codes2
Dr. Klein compared with the Pennsylvania median for hematology (internal medicine) physicians, 2023
- Dr. Klein
- Pennsylvania median
- Medicare services
- 30vs 16782% below
- Medicare patients
- 17vs 12887% below
Medians across 48 hematology (internal medicine) physicians in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Klein'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klein and other hematology (internal medicine) physicians in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter S. Klein treated 17 Medicare patients in 2024, average age 73
CMS counts 17 Medicare patients who saw Dr. Klein in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.12, 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. Klein's median patient age at 53, with 62% women.
Medicare patients, 202417
Average age73
Average risk score2.12
Dr. Klein's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Klein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation65%
- Chronic kidney disease65%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter S. Klein scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Klein for performance year 2024, reported as part of a group. Dr. Klein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Klein's MIPS scores, performance year 2024
- 85of 100Final score
- 73.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 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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Dr. Peter S. Klein has 41 publications on record
Dmand AI links 41 papers to Dr. Klein, published from 2011 to 2024. 2021 was the busiest year, with 6. The most frequent topics are Xenopus laevis, Glycogen Synthase Kinase 3 and Signal Transduction. Dr. Klein has published most often in Cells. Dr. Klein's most frequent co-authors are Wade Hayhurst Berrettini, MD, Martin P. Carroll, MD and Chi Van Dang, MD.
Papers41
Years published2011 to 2024
Dr. Klein's papers by year, 2013 to 2024
Topics Dr. Klein writes about most
- Xenopus laevis
- Glycogen Synthase Kinase 3
- Signal Transduction
- Wnt Signaling Pathway
- Xenopus Proteins
- Cell Line, Tumor
- Cell Proliferation
- Gene Expression Regulation, Developmental
Dr. Klein's most frequent co-authors
- Wade Hayhurst Berrettini, MD2 shared papers
- Martin P. Carroll, MD2 shared papers
- Chi Van Dang, MD2 shared papers
Recent publications by Dr. Klein
Adenomatous Polyposis ColiAxin Proteinbeta Catenin
Proc Natl Acad Sci U S A
Coronavirus Nucleocapsid ProteinsCOVID-19Glycogen Synthase Kinase 3
See who Dr. Klein researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Klein works with, so you can find a warm path to the right hematology (internal medicine) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Peter S. Klein graduated from Johns Hopkins University School of Medicine
Dr. Klein graduated from Johns Hopkins University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter S. Klein'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Peter S. Klein
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. Peter S. Klein's NPI number?
Dr. Peter S. Klein's NPI number is 1467495788. It was assigned on June 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter S. Klein?
Dr. Peter S. Klein is a hematology (internal medicine) physician in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Hematology (Internal Medicine) Physician (taxonomy code 207RH0000X).
Where does Dr. Peter S. Klein practice?
Dr. Klein practices at 3400 Spruce St, Philadelphia, PA 19104. Dr. Klein's primary practice is Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania, part of University of Pennsylvania.
What is Dr. Peter S. Klein's office phone number?
The practice phone on file for Dr. Klein is (215) 662-6289.
What is Dr. Peter S. Klein's medical license number?
Dr. Klein holds Pennsylvania license MD055837L.
Which hospitals is Dr. Peter S. Klein affiliated with?
Dr. Klein practices at Hospital of the University of Pennsylvania in Philadelphia, Pennsylvania.
What medical group is Dr. Peter S. Klein part of?
Dr. Klein is linked to Penn Medicine Lancaster General Health.
Does Dr. Peter S. Klein accept Medicare?
Yes. CMS data shows Dr. Klein billed Medicare for 30 services in 2023, and Dr. Klein accepts Medicare assignment.
What is Dr. Peter S. Klein's MIPS score?
Dr. Klein's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. Peter S. Klein see?
CMS counts 17 Medicare patients who saw Dr. Klein in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Peter S. Klein bill to Medicare?
In 2023, Dr. Klein's most billed Medicare services were hospital inpatient care (99222) and hospital inpatient care (99223).
Where did Dr. Peter S. Klein go to medical school?
Dr. Klein graduated from Johns Hopkins University School of Medicine in 1988.
How long has Dr. Peter S. Klein been practicing?
Dr. Klein graduated from medical school in 1988, 38 years ago.
Does Dr. Peter S. Klein do research?
Dmand AI links 41 publications to Dr. Klein, published from 2011 to 2024.
Who does Dr. Peter S. Klein publish with?
Dr. Klein's most frequent co-authors are Wade Hayhurst Berrettini, MD (2 shared papers), Martin P. Carroll, MD (2 shared papers) and Chi Van Dang, MD (2 shared papers).
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