DR. GREGORY A RUFF M.D.
NPI 1548249642
Internal Medicine - Pulmonary Disease in State College, PA

Q: What is Gregory Ruff's NPI number?

The NPI number for Gregory Ruff is 1548249642. It was assigned to this individual provider in the NPPES registry on January 17, 2006.

Q: What is Gregory Ruff'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 Gregory Ruff was last updated on July 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 January 17, 2006PECOS EnrolledAccepts Medicare Assignment

72.57/100

CMS Quality Rating

1850 E PARK AVE STE 201, STATE COLLEGE, PA 16803(844) 278-4600(814) 466-7489 Get Directions Write a Review

NPPES record last updated: July 12, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Gregory A Ruff M.d. NPPES

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

DR. GREGORY A RUFF M.D. (NPI 1548249642) is an individual pulmonary disease provider in State College, Pennsylvania, licensed in Pennsylvania (MD467806) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Mount Nittany Medical Center, and is a graduate of Pennsylvania State University College Of Medicine (1993).

NPPES Registry Identity

NPI1548249642

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. GREGORY A RUFFCredential: M.D.

Location Address1850 E PARK AVE STE 201State College, PA 16803-6706

Mailing Address1850 E Park Ave Ste 201State College, PA 16803-6706 · (844) 278-4600 · Fax (814) 466-7489

Phone(844) 278-4600

Fax(814) 466-7489

Sole ProprietorNo

Medical School CMSPennsylvania State University College Of MedicineGraduated 1993

Enumeration DateJanuary 17, 2006

Last NPPES UpdateJuly 12, 2019

✔ NPI 1548249642 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 PA · MD467806

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 MD467806 (PA)

Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X · License MD467806 (PA)

1850 E PARK AVE STE 201, State College, PA 16803

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

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. Gregory A Ruff 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 ID4082789599

PECOS Enrollment IDI20190801000684

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 Reassignment

Medicare enrollment records show Gregory Ruff reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mount Nittany Medical Center Health Services Inc

1.9 mi

Internal Medicine

155 WELLNESS WAY
State College, PA 16803

Reassigned Medicare billing, Pennsylvania enrollment
393 clinicians in this Medicare group

NPI 1598992554 (814) 231-7000

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 18

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 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.

122 services115 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.

90 services71 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.

62 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.

41 services29 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

31 services30 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.

31 services30 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.

31 services30 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.

28 services28 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

27 services17 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.

26 services26 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.

23 services23 patients

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

21 services21 patients

Test to determine lung volumes using sensors 94726

20 services20 patients

Test to examine how well the lungs exchange gases 94729

20 services20 patients

Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811

A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.

16 services15 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.

16 services16 patients

Sleep study in sleep lab (6 years or older) 95810

A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.

15 services15 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.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Mount Nittany Medical Center

Acute Care Hospitals · State College, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390268

Location1800 East Park AveState College, PA 16803 · Centre County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 16803 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

$126.34 typical visit price

range $54.64 – $166.87

Typical copayment $31.58 (range $13.66 – $41.71)

Most-billed visit code 99204

Established Patient

$96.82 typical visit price

range $17.33 – $135.84

Typical copayment $24.20 (range $4.33 – $33.96)

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.

72.57/100

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

Scored as part of a group practice

Quality

55.12

Promoting Interoperability

Improvement Activities

Cost

55.13

Referred Medical Equipment & Supplies CMS DME claims 23

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

12 suppliers91 claims91 services$35.86 avg. paid by Medicare

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

DME-Other DME · category DE001N

13 suppliers97 claims97 services$92.86 avg. paid by Medicare

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

DME-Other DME · category DE001N

10 suppliers89 claims239 services$32.90 avg. paid by Medicare

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

DME-Other DME · category DE001N

12 suppliers37 claims182 services$18.60 avg. paid by Medicare

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

DME-Other DME · category DE001N

9 suppliers37 claims200 services$15.31 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

15 suppliers84 claims85 services$52.33 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

21 suppliers95 claims95 services$17.86 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

14 suppliers82 claims82 services$16.02 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

20 suppliers170 claims922 services$2.17 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

9 suppliers60 claims60 services$6.36 avg. paid by Medicare

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

DME-Other DME · category DE001N

18 suppliers73 claims73 services$11.31 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

5 suppliers25 claims25 services$15.35 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

2 suppliers24 claims24 services$843.63 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 suppliers16 claims16 services$111.64 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

1 supplier15 claims15 services$198.82 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

5 suppliers49 claims50 services$13.97 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

7 suppliers151 claims152 services$36.24 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

8 suppliers140 claims142 services$90.01 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

5 suppliers60 claims62 services$35.06 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

12 suppliers35 claims3,587 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

5 suppliers20 claims1,230 services$0.75 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

2 suppliers30 claims30 services$35.58 avg. paid by Medicare

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

DME-Other DME · category DE000N

13 suppliers38 claims38 services$25.30 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 14

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

STEVEN M SMITH PA-C

Physician Assistant

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (814) 231-7888

JENNIFER M ILLIG PAC

Physician Assistant (Medical)

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (844) 278-4600

DR. FAOUD ISHMAEL M.D.

Allergy & Immunology

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (844) 278-4600

DR. SHYAMA DILANI WICKRAMAARATCHI D.O.

Internal Medicine (Interventional Cardiology)

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (814) 234-8800

SHANNON MARKER CRNP

Nurse Practitioner

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (814) 689-3140

KIMBERLY A KOLONICH MD

Family Medicine

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (844) 278-4600

JEFFREY A RATNER MD

Internal Medicine (Pulmonary Disease)

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (814) 231-7888

SEBASTIAN SYLVESTRE MD

Allergy & Immunology

1850 E PARK AVE STE 201
STATE COLLEGE, PA 16803

Centre County (814) 234-8800

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 Gregory Ruff's NPI number?

The NPI number for Gregory Ruff is 1548249642. It was assigned to this individual provider in the NPPES registry on January 17, 2006.

Where is Gregory Ruff located?

Gregory Ruff practices at 1850 E Park Ave Ste 201, State College, PA 16803. The listed phone number is (844) 278-4600.

What is Gregory Ruff's specialty?

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

Is Gregory Ruff enrolled in Medicare?

Yes. Gregory Ruff 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 organization bills Medicare for Gregory Ruff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Ruff reassigns Medicare benefits to Mount Nittany Medical Center Health Services Inc (State College, PA). The 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 Gregory Ruff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Ruff accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Gregory Ruff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gregory Ruff affiliated with any hospitals?

According to CMS data, Gregory Ruff is affiliated with Mount Nittany Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Ruff was last updated on July 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.