DR. DOUGLAS RENNERT M.D.
NPI 1992796502
Internal Medicine - Pulmonary Disease in Leesburg, VA

Q: What is Douglas Rennert's NPI number?

The NPI number for Douglas Rennert is 1992796502. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Q: What is Douglas Rennert's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Douglas Rennert was last updated on July 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 02, 2005PECOS EnrolledAccepts Medicare Assignment

81.28/100

CMS Quality Rating

19455 DEERFIELD AVE, SUITE 206, LEESBURG, VA 20176(703) 858-9608(702) 858-9618 Get Directions Write a Review

NPPES record last updated: July 10, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 10, 2023, Jun 8, 2022 (2 updates tracked since 2022).

On this page

About Dr. Douglas Rennert M.d. NPPES

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

DR. DOUGLAS RENNERT M.D. (NPI 1992796502) is an individual pulmonary disease provider in Leesburg, Virginia, licensed in Virginia (0101043761) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Inova Loudoun Hospital, and maintains a secondary practice location in Reston.

NPPES Registry Identity

NPI1992796502

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. DOUGLAS RENNERTCredential: M.D.

Location Address19455 DEERFIELD AVE, SUITE 206Leesburg, VA 20176-8100

Mailing Address19455 Deerfield Ave, Ste 206Leesburg, VA 20176-8100 · (703) 858-9608 · Fax (703) 858-9618

Phone(703) 858-9608

Fax(702) 858-9618

Sole ProprietorNo

Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1984

Enumeration DateNovember 2, 2005

Last NPPES UpdateJuly 10, 20232 updates tracked since enumeration

NPPES CertifiedJuly 10, 2023

✔ NPI 1992796502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in VA · 0101043761

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 0101043761 (VA)

Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X · License 0101043761 (VA)

19455 DEERFIELD AVE, Leesburg, VA 20176

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Secondary Practice Location 1

Location 11860 Town Center Dr Ste 270Reston, VA 20190-5899 · Phone (703) 318-8157 · Fax (703) 318-8157

Other Identifiers 2

Medicaid5854466VA

OtherA6950002DC · Dc Bs

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. Douglas Rennert M.d. 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 ID6800868787

PECOS Enrollment IDI20110111000599, I20140115000024

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 Douglas Rennert reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pulmonary And Critical Care Associates, P.C.

Same address

Pulmonary Disease

19455 DEERFIELD AVE STE 206
Leesburg, VA 20176

Reassigned Medicare billing, District of Columbia and Virginia enrollments
7 clinicians in this Medicare group

NPI 1023008182 (703) 858-9608

Inova Health Care Services

19 mi

Multi-Specialty

2740 PROSPERITY AVE STE 200
Fairfax, VA 22031

Reassigned Medicare billing, District of Columbia enrollment
2,618 clinicians in this Medicare group

NPI 1669511051 (703) 321-2600

Commonwealth Critical Care LLC

32 mi

Critical Care Medicine

2501 PARKERS LN
Alexandria, VA 22306

Reassigned Medicare billing, Virginia enrollment
31 clinicians in this Medicare group

NPI 1891210035 (703) 664-7000

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 20

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.

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.

1,063 services625 patients

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.

566 services439 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.

439 services347 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.

408 services244 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.

392 services320 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

371 services154 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

370 services296 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

207 services29 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

109 services17 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

106 services95 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

82 services82 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.

81 services81 patients

Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458

This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.

69 services19 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

67 services59 patients

Sleep study including heart rate, breathing, airflow, and effort 95806

A sleep study monitors your heart rate, breathing patterns, airflow, and physical effort while you sleep. It helps identify sleep disorders by tracking your sleep stages and cycles. This data aids doctors in diagnosing and treating sleep-related issues.

47 services46 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.

21 services16 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.

20 services19 patients

Test to measure lung airway sensitivity 94070

This procedure, called a Bronchial Challenge Test, evaluates how sensitive your lungs are to substances that may cause asthma symptoms. You'll inhale a certain substance, and then your lung function is measured. It aids in diagnosing and managing asthma.

18 services18 patients

Test for exercise-induced lung stress 94618

An exercise-induced lung stress test assesses how your lungs respond to physical activity. During the test, you'll exercise on a treadmill or stationary bike while your heart rate, breathing, blood pressure, and oxygen levels are monitored. This helps identify any abnormal lung responses to exercise.

15 services13 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

14 services14 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Loudoun Hospital

Acute Care Hospitals · Leesburg, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490043

Location44045 Riverside ParkwayLeesburg, VA 20176 · Loudoun County

Emergency services Birthing friendly

Reston Hospital Center

Acute Care Hospitals · Reston, VA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490107

Location1850 Town Center ParkwayReston, VA 20190 · Fairfax County

Emergency services

Uva Health Haymarket Medical Center

Acute Care Hospitals · Haymarket, VA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490144

Location15225 Healthcote BoulevardHaymarket, VA 20169 · Prince William County

Emergency services

Stonesprings Hospital Center

Acute Care Hospitals · Dulles, VA

OwnershipProprietary

CMS Certification Number490145

Location24440 Stone Springs BoulevardDulles, VA 20166 · Loudoun County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20176 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

70.77

Promoting Interoperability

100

Improvement Activities

Cost

66.84

Reported Quality Measures

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

99%1,786 patients4/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

83%1,906 patients3/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period

98%445 patients4/55-star benchmark: 99%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…

42%819 patients2/55-star benchmark: 100%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

41%445 patients2/55-star benchmark: 90%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

30%739 patients2/55-star benchmark: 97%

Preventive Care and Screening: Influenza Immunization

Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization

42%477 patients2/55-star benchmark: 88%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user

Patients screenedForUse: 100% · 468 patients

Patients tobacco: 95% · 468 patients

8%25 patients1/55-star benchmark: 98%

Provide Patient Access

For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…

86%819 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…

19%819 patients2/55-star benchmark: 75%

View, Download and Transmit (VDT)

During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.

1%957 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 29

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

15 suppliers212 claims212 services$30.01 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003

DME-Other DME · category DE000N

1 supplier16 claims31 services$1.25 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, non-disposable A7005

DME-Other DME · category DE000N

2 suppliers21 claims21 services$12.92 avg. paid by Medicare

Filter, disposable, used with aerosol compressor or ultrasonic generator A7013

DME-Other DME · category DE000N

2 suppliers26 claims27 services$0.58 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

8 suppliers71 claims71 services$73.75 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

10 suppliers75 claims213 services$28.81 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

7 suppliers93 claims530 services$14.65 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

5 suppliers75 claims435 services$11.21 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

10 suppliers174 claims174 services$43.97 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

15 suppliers143 claims143 services$14.87 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

5 suppliers52 claims52 services$9.89 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

17 suppliers232 claims1,255 services$1.66 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

14 suppliers123 claims123 services$10.66 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier118 claims122 services$14.02 avg. paid by Medicare

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443

DME-Oxygen and Supplies · category DC000N

1 supplier13 claims19 services$40.91 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

2 suppliers22 claims22 services$70.47 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0471

DME-Other DME · category DE001N

2 suppliers24 claims24 services$160.89 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

2 suppliers99 claims105 services$11.49 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

2 suppliers32 claims32 services$3.93 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

10 suppliers149 claims154 services$27.46 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

7 suppliers247 claims255 services$70.63 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

5 suppliers57 claims59 services$32.34 avg. paid by Medicare

Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg J1561

Treatment-Injections and Infusions (nononcologic) · category RI008N

2 suppliers15 claims1,050 services$34.83 avg. paid by Medicare

Formoterol fumarate, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 20 micrograms J7606

DME-Drugs Administered Through DME · category DG006N

2 suppliers49 claims2,850 services$6.66 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

10 suppliers72 claims12,974 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

8 suppliers41 claims2,280 services$0.10 avg. paid by Medicare

Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg J7626

DME-Drugs Administered Through DME · category DG000N

4 suppliers60 claims3,420 services$0.81 avg. paid by Medicare

Revefenacin inhalation solution, fda-approved final product, non-compounded, administered through dme, 1 microgram J7677

DME-Drugs Administered Through DME · category DG006N

1 supplier12 claims63,000 services$0.15 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

16 suppliers138 claims138 services$25.13 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

LOUDOUN ENT & ALLERGY

Otolaryngology (Facial Plastic Surgery)

19455 DEERFIELD AVE, SUITE 312
LANSDOWNE, VA 20176

Loudoun County (703) 858-0303

DR. MEGAN BUREAU P.T.

Physical Therapist

19455 DEERFIELD AVE, STE 309
LANSDOWNE, VA 20176

Loudoun County (703) 729-5010

DOCTORS CHOICE HOME CARE INC

Home Health

19455 DEERFIELD AVE, SUITE 208
LANSDOWNE, VA 20176

Loudoun County (703) 723-4284

DR. SCOTT MICHAEL SIRLIN MD

Pediatrics (Pediatric Gastroenterology)

19455 DEERFIELD AVE, SUITE 205
LANSDOWNE, VA 20176

Loudoun County (703) 726-9930

DAVID CHARLES JOHNSON M.D.

Neuromusculoskeletal Medicine, Sports Medicine

19455 DEERFIELD AVE, SUITE 312
LANSDOWNE, VA 20176

Loudoun County (703) 729-5010

LOUDOUN CARDIOVASCULAR SPECIALISTS, PLLC

Internal Medicine (Interventional Cardiology)

19455 DEERFIELD AVE, SUITE 306
LANSDOWNE, VA 20176

Loudoun County (703) 723-5520

DR. HARMEET SINGH M.D.

Specialist

19455 DEERFIELD AVE, SUITE 211
LEESBURG, VA 20176

Loudoun County (703) 858-3700

NATIONAL SPORTS MEDICINE INSTITUTE

Clinic/Center (Physical Therapy)

19455 DEERFIELD AVE, SUITE 309
LANSDOWNE, VA 20176

Loudoun County (703) 729-5010

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Douglas Rennert's NPI number?

The NPI number for Douglas Rennert is 1992796502. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Where is Douglas Rennert located?

Douglas Rennert practices at 19455 Deerfield Ave Suite 206, Leesburg, VA 20176. The listed phone number is (703) 858-9608.

What is Douglas Rennert's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Douglas Rennert enrolled in Medicare?

Yes. Douglas Rennert is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Douglas Rennert's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Rennert reassigns Medicare benefits to 3 organizations: Pulmonary And Critical Care Associates, P.C. (Leesburg, VA), Inova Health Care Services (Fairfax, VA) and Commonwealth Critical Care LLC (Alexandria, VA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Douglas Rennert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Douglas Rennert affiliated with any hospitals?

According to CMS data, Douglas Rennert is affiliated with Inova Loudoun Hospital, Reston Hospital Center, Uva Health Haymarket Medical Center and Stonesprings Hospital Center.

When was this NPI record last updated?

The NPPES record for Douglas Rennert was last updated on July 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.