DR. KLAUS-DIETER K LESSNAU MD
NPI 1083684708
Internal Medicine - Sleep Medicine in New York, NY

Q: What is Klaus-dieter Lessnau's NPI number?

The NPI number for Klaus-dieter Lessnau is 1083684708. It was assigned to this individual provider in the NPPES registry on January 25, 2006.

Q: What is Klaus-dieter Lessnau's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Active since January 25, 2006PECOS EnrolledAccepts Medicare Assignment

332 E 14TH ST, NEW YORK, NY 10003(212) 481-3333 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 7, 2023, Apr 2, 2019 (2 updates tracked since 2019).

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About Dr. Klaus-dieter K Lessnau Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KLAUS-DIETER K LESSNAU MD (NPI 1083684708) is an individual sleep medicine provider in New York, New York, licensed in New York (137901) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1083684708

Entity TypeIndividualMale

Primary Taxonomy207RS0012X

Provider Legal NameDR. KLAUS-DIETER K LESSNAUCredential: MD

Location Address332 E 14TH STNew York, NY 10003-4243

Mailing Address332 E 14th StNew York, NY 10003-4243 · (212) 481-3333 · Fax (212) 253-4242

Phone(212) 481-3333

Sole ProprietorNo

Medical School CMSOtherGraduated 1985

Enumeration DateJanuary 25, 2006

Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration

✔ NPI 1083684708 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RS0012X

License✔ Licensed in NY · 137901

Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 206484 (NY)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 206484 (NY)

332 E 14TH ST, New York, NY 10003

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Secondary Practice Location 1

Location 1110 E 59th St, Suite 9cNew York, NY 10022-1304 · Phone (212) 583-2969 · Fax (212) 644-8666

Other Identifiers 2

Medicaid01872917NY

Other206484NY · License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Klaus-dieter K Lessnau Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092602615

PECOS Enrollment IDI20040301000002

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Klaus-dieter Lessnau reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

14 Street Medical, PC

Same address

Internal Medicine

332 E 14TH ST
New York, NY 10003

Reassigned Medicare billing, New York enrollment
45 clinicians in this Medicare group

NPI 1386091486 (212) 481-3333

Diego A Diaz MD PC

2.4 mi

Pulmonary Disease

1041 3RD AVE
New York, NY 10065

Reassigned Medicare billing, New York enrollment
2 clinicians in this Medicare group

NPI 1689122913 (212) 583-2956

North Shore - Lij Medical PC

14 mi

Internal Medicine

270-05 76TH AVE
New Hyde Park, NY 11040

Reassigned Medicare billing, New York enrollment
9,353 clinicians in this Medicare group

NPI 1790043479 (516) 465-8089

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

137 services99 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

90 services72 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

90 services72 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

71 services44 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

55 services36 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

50 services13 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

30 services22 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

27 services23 patients

Evaluation of use of breathing device 94664

The evaluation of a breathing device involves checking how effectively you're using it to manage your respiratory condition. It assesses the device's fit, your comfort, and your technique to ensure optimal results.

27 services21 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

27 services27 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

22 services19 patients

Test to measure rate of airflow 94375

This test, known as spirometry, measures how much air you can breathe in and out, and how quickly you can do so. It helps assess your lung function and can be used to diagnose or monitor conditions like asthma or COPD.

12 services12 patients

Test for exercise-induced heart and lung stress 94621

This is a test to evaluate how your heart and lungs respond to physical exertion. You'll exercise on a treadmill or a stationary bike, while your heart rate, breathing, blood pressure, and fatigue levels are monitored. This helps identify any abnormal responses to physical activity.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$150.24 typical visit price

range $65.69 – $198.19

Typical copayment $37.56 (range $16.42 – $49.54)

Most-billed visit code 99204

Established Patient

$114.88 typical visit price

range $21.20 – $160.66

Typical copayment $28.72 (range $5.30 – $40.16)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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