ALBERT KYUNGWOOK HAHM M.D.
NPI 1821208505
Internal Medicine - Gastroenterology in West Chester, PA

Q: What is Albert Hahm's NPI number?

The NPI number for Albert Hahm is 1821208505. It was assigned to this individual provider in the NPPES registry on May 23, 2007.

Q: What is Albert Hahm's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Albert Hahm was last updated on May 16, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 May 23, 2007PECOS EnrolledAccepts Medicare Assignment

915 OLD FERN HILL ROAD, BUILDING B, SUITE 300, WEST CHESTER, PA 19380(610) 431-3122(610) 431-4799 Get Directions Write a Review

NPPES record last updated: May 16, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Albert Kyungwook Hahm M.d. NPPES

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

ALBERT KYUNGWOOK HAHM M.D. (NPI 1821208505) is an individual gastroenterology provider in West Chester, Pennsylvania, licensed in Pennsylvania (MD436909) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Lancaster General Hospital, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2006).

NPPES Registry Identity

NPI1821208505

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameALBERT KYUNGWOOK HAHMCredential: M.D.

Location Address915 OLD FERN HILL ROAD, BUILDING B, SUITE 300West Chester, PA 19380

Mailing Address915 Old Fern Hill Road, Building B, Suite 300West Chester, PA 19380 · (610) 431-3122 · Fax (610) 431-4799

Phone(610) 431-3122

Fax(610) 431-4799

Sole ProprietorNo

Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2006

Enumeration DateMay 23, 2007

Last NPPES UpdateMay 16, 2013

✔ NPI 1821208505 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in PA · MD436909

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

915 OLD FERN HILL ROAD, West Chester, PA 19380

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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

Albert Kyungwook Hahm 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 ID9436204260

PECOS Enrollment IDI20090901000042

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 Albert Hahm reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

West Chester Gi Associates PC

Same address

Gastroenterology

915 OLD FERN HILL ROAD, BUILDING B SUITE 300
West Chester, PA 19380

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

NPI 1336100924 (610) 431-3122

Regional Gastroenterology Associates Of Lancaster, Ltd.

41 mi

Gastroenterology

2112 HARRISBURG PIKE STE 202
Lancaster, PA 17601

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

NPI 1154422806 (717) 869-4600

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 16

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

313 services312 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

151 services150 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.

133 services112 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.

97 services78 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

82 services82 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.

77 services74 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

68 services52 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.

41 services32 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

32 services32 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

31 services31 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

31 services31 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.

18 services18 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

16 services15 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

14 services14 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

14 services14 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Lancaster General Hospital

Acute Care Hospitals · Lancaster, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390100

Location555 North Duke StreetLancaster, PA 17602 · Lancaster County

Emergency services Birthing friendly

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390111

Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County

Emergency services Birthing friendly

Paoli Hospital

Acute Care Hospitals · Paoli, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390153

Location255 West Lancaster AvenuePaoli, PA 19301 · Chester County

Emergency services Birthing friendly

Chester County Hospital

Acute Care Hospitals · West Chester, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390179

Location701 East Marshall StreetWest Chester, PA 19380 · Chester County

Emergency services Birthing friendly

Riddle Memorial Hospital

Acute Care Hospitals · Media, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390222

Location1068 West Baltimore PikeMedia, PA 19063 · Delaware County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19380 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

$137.17 typical visit price

range $59.88 – $180.99

Typical copayment $34.29 (range $14.97 – $45.24)

Most-billed visit code 99204

Established Patient

$105.21 typical visit price

range $19.30 – $147.29

Typical copayment $26.30 (range $4.82 – $36.82)

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.

Reported Quality Measures

Breast Cancer Screening

Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer

75%363 patients4/55-star benchmark: 92%

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

73%819 patients4/55-star benchmark: 85%

Diabetes: Medical Attention for Nephropathy

The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period

71%173 patients3/55-star benchmark: 99%

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%1,817 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.

93%2,203 patients4/55-star benchmark: 99%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

80%830 patients1/55-star benchmark: 100%

Patient-Specific Education

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

95%1,516 patients4/55-star benchmark: 97%

Pneumococcal Vaccination Status for Older Adults

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

82%455 patients4/55-star benchmark: 90%

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

51%531 patients3/55-star benchmark: 88%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

91%1,516 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 CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

11%1,516 patients1/55-star benchmark: 89%

Use of High-Risk Medications in the Elderly

Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.

Lower rates are better for this measure.

Patients 2+: 0% · 455 patients

0%455 patients5/55-star benchmark: 100%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

9%1,516 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.

Other Providers at the Same Location NPPES 13

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

DR. DAVID E BOBMAN MD

Internal Medicine (Gastroenterology)

915 OLD FERN HILL ROAD, BUILDING B SUITE 300
WEST CHESTER, PA 19380

Chester County (610) 431-3122

RJK MEDICAL ASSOCIATES LTD

Physical Medicine & Rehabilitation

915 OLD FERN HILL ROAD, SUITE 4
WEST CHESTER, PA 19380

Chester County (610) 738-2490

WEST CHESTER GI ASSOCIATES PC

Internal Medicine (Gastroenterology)

915 OLD FERN HILL ROAD, BUILDING B SUITE 300
WEST CHESTER, PA 19380

Chester County (610) 431-3122

ROBERT J. KREB III

Physical Medicine & Rehabilitation

915 OLD FERN HILL ROAD, SUITE 4
WEST CHESTER, PA 19380

Chester County (610) 738-2480

REINA PAI BENDER MD

Internal Medicine (Gastroenterology)

915 OLD FERN HILL ROAD, BUILDING B SUITE 300
WESTCHESTER, PA 19380

Chester County (610) 431-3122

PATRICK SAJAK

Family Medicine (Sports Medicine)

915 OLD FERN HILL ROAD, SUITE 1 BUILDING B
WEST CHESTER, PA 19380

Chester County (610) 692-6280

PAMELA T DEMNICKI MD

Surgery

915 OLD FERN HILL ROAD, BUILDING B, SUITE 201
WEST CHESTER, PA 19380

Chester County (610) 436-6696

CARRIE N MILLER BAICHI MD

Internal Medicine (Gastroenterology)

915 OLD FERN HILL ROAD, BUILDING B SUITE 300
WEST CHESTER, PA 19380

Chester County (610) 431-3122

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 Albert Hahm's NPI number?

The NPI number for Albert Hahm is 1821208505. It was assigned to this individual provider in the NPPES registry on May 23, 2007.

Where is Albert Hahm located?

Albert Hahm practices at 915 Old Fern Hill Road Building B, Suite 300, West Chester, PA 19380. The listed phone number is (610) 431-3122.

What is Albert Hahm's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Albert Hahm enrolled in Medicare?

Yes. Albert Hahm 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 Albert Hahm's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Albert Hahm reassigns Medicare benefits to 2 organizations: West Chester Gi Associates PC (West Chester, PA) and Regional Gastroenterology Associates Of Lancaster, Ltd. (Lancaster, PA). 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 Albert Hahm's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Albert Hahm accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Albert Hahm 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 Albert Hahm affiliated with any hospitals?

According to CMS data, Albert Hahm is affiliated with Lancaster General Hospital, Hospital Of Univ Of Pennsylvania, Paoli Hospital, Chester County Hospital and Riddle Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Albert Hahm was last updated on May 16, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.