Peter James Lax , MB CHB (HONS) FRCA
Anesthesiology • Baltimore, MD
951 Fell St, Apt 723
Baltimore, MD 212313586
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 15, 2013; this date does not establish years in practice.
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Published CMS data list 132 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 00731 — Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope: 36 service units.
- 36620 — Insertion of artery tube for blood sampling or infusion through skin: 35 service units.
- 00142 — Anesthesia for lens surgery: 18 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table · Guide: How to read Medicare Part B data
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Close to the middle for Medicare Part B services among clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: 114. Middle half: 54 to 209.
Close to the middle for Medicare Part B services among clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: 130. Middle half: 57 to 250.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
Practice Location & Contact Primary Location
951 Fell St
Apt 723
Baltimore, MD 212313586
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Johns Hopkins University. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2005
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
235 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $15,946 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $12,705 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $25.91 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
21 years (graduated 2005)
CMS Doctors and Clinicians data list 2005 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2013
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Peter Lax has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Peter Lax as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Baltimore and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: 114. Middle half: 54 to 209.
Close to the middle for clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: 130. Middle half: 57 to 250.
Medicare-allowed amount
Close to the middle for clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: $15,010. Middle half: $6,717 to $29,304.
Close to the middle for clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: $17,166. Middle half: $7,219 to $33,664.
Paid by Medicare
Close to the middle for clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: $11,993. Middle half: $5,357 to $23,267.
Close to the middle for clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: $13,723. Middle half: $5,712 to $26,668.
524 active clinicians are listed under Anesthesiology with a practice address in Baltimore, MD (1,258 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Baltimore
1.1% of these 524 clinicians have the CMS telehealth indicator.
50.6% of these 524 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $317.08 in 2024 to $25.91 in 2025.
- 2024: $317.08
- 2025: $25.91
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $25.91.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Haemonetics Corporation |
Food and Beverage
In-kind items and services
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TEG6S HEMOSTASIS SYSTEM | General | $25.91 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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00731
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
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36 | 36 | $1308.33 | $95.57 |
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36620
Insertion of artery tube for blood sampling or infusion through skin
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35 | 35 | $199.00 | $44.66 |
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00142
Anesthesia for lens surgery
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18 | 18 | $1358.33 | $81.70 |
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00520
Anesthesia for other closed procedure on chest
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17 | 17 | $1632.35 | $143.53 |
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00145
Anesthesia for retinal surgery
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13 | 13 | $2157.69 | $166.27 |
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00790
Anesthesia for other procedure on upper abdomen
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13 | 12 | $3576.92 | $374.63 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
NUCC Taxonomy Code: 207LC0200X
An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY
I20240304001090
MD
7618312323
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Johns Hopkins University
600 N Wolfe St, Baltimore, MD 212870005
Phone: 4105024340
Johns Hopkins University
600 N Wolf St, Baltimore, MD 212870005
Career & Practice History
NPI enumerated April 15, 2013.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Anesthesiology Specialists in Baltimore
- Dr. Vyacheslav Fuzaylov, MD
- Dr. Joelle Smith, MD
- Dr. Peju Adekoya, MD
- Dr. Daniel Copeland, MD
- Dr. Abraham Lin, MD
- Dr. Avi Leibowitz, MD
Mailing Address
951 Fell St, Apt 723
Baltimore, MD 212313586
Phone: 2024927013