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Dr. Gem Marian Manalo, MD
NPI1932604121PAC ID7618219221
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 35
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $58
- Practice address
- 121 W 27th St, New York, NY 10001
- Practice phone
- Call (212) 427-8761
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Manhattan Gastroenterology
New York, New York
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Dr. Gem Marian Manalo is an anesthesiologist in New York, New York
Dr. Manalo practices at Manhattan Gastroenterology in New York, New York.
Dr. Manalo's NPI, 1932604121, was assigned on March 28, 2018. Dr. Manalo graduated from Wayne State University School of Medicine in 2018. Dr. Manalo holds Massachusetts license 291692.
NPI and contact details
- NPI
- 1932604121NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618219221
- NPI enumeration date
- March 28, 2018
- NPI status
- Active
- Practice phone
- (212) 427-8761
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gem Marian Manalo practices at Manhattan Gastroenterology in New York, New York
Dr. Manalo's primary practice is Manhattan Gastroenterology, at 121 W 27th St, New York, NY 10001 in New York County. The practice phone is (212) 427-8761.
- Manhattan Gastroenterology121 W 27th St, New York, NY 10001 · New York CountyPhone(212) 427-8761
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gem Marian Manalo is affiliated with 3 sites of care and 2 medical groups
Dr. Manalo's primary practice is Manhattan Gastroenterology in New York, New York. Dr. Manalo is also affiliated with Auburn Community Hospital. The medical group on file is Mount Sinai Nuclear Medicine Associates. Dmand AI also links Dr. Manalo to 1 more group practice or clinic and 1 medical group, each named with a free account.
Manhattan GastroenterologyPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gem Marian Manalo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Manalo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Manhattan Gastroenterology | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gem Marian Manalo is one of 3,858 anesthesiologists in New York
Anesthesiology is Dr. Manalo's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Manalo is licensed in Massachusetts.
Specialties and state licenses
- Anesthesiology, MassachusettsPrimary
Anesthesiologists near Dr. Manalo
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gem Marian Manalo billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Manalo across 2 procedure codes in 2024, for 35 Medicare patients. Medicare paid $2,597 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202422
Medicare patients35
Paid by Medicare$2,597
Procedure codes2
Dr. Manalo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 282024: 1161%
- Surgery
- 2023: 482024: 1177%
- Imaging
- 2023: 252024: 0100%
- Tests and treatments
- 2023: 332024: 0100%
Dr. Manalo compared with the New York median for anesthesiologists, 2024
- Dr. Manalo
- New York median
- Medicare services
- 22vs 7671% below
- Medicare patients
- 35vs 13273% below
Medians across 3,723 anesthesiologists in New York with Dmand AI profiles that report each measure.
Dr. Manalo's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Manalo and other anesthesiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gem Marian Manalo treated 35 Medicare patients in 2024, average age 77
CMS counts 35 Medicare patients who saw Dr. Manalo in 2024. The largest group is 65 to 74, with 16 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Manalo's median patient age at 38, with 44% women.
Medicare patients, 202435
Average age77
Average risk score2.06
Dr. Manalo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Manalo's Medicare patients by sex, 2024
- Women1954%
- Men1646%
Chronic conditions among Dr. Manalo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation60%
- Heart failure60%
- Ischemic heart disease60%
- Arthritis54%
- Chronic kidney disease37%
- Diabetes37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Manalo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women44%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. Gem Marian Manalo has 2 publications on record
Dmand AI links 2 papers to Dr. Manalo in 2021. Dr. Manalo's most frequent co-authors are Jeffrey Paul Fleming, MD, Michael Timothy Hresko, MD and Jason Zhensheng Qu, MD.
Papers2
Dr. Manalo's most frequent co-authors
- Jeffrey Paul Fleming, MD1 shared paper
- Michael Timothy Hresko, MD1 shared paper
- Jason Zhensheng Qu, MD1 shared paper
Recent publications by Dr. Manalo
PainPatient SatisfactionPostoperative Period
See who Dr. Manalo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Manalo works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gem Marian Manalo received $58 in industry payments in 2024
CMS Open Payments shows 2 general payments to Dr. Manalo from 2 drug and device companies in 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $32.
Companies that paid Dr. Manalo the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gem Marian Manalo graduated from Wayne State University School of Medicine
Dr. Manalo graduated from Wayne State University School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gem Marian Manalo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gem Marian Manalo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gem Marian Manalo's NPI number?
Dr. Gem Marian Manalo's NPI number is 1932604121. It was assigned on March 28, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Gem Marian Manalo?
Dr. Gem Marian Manalo is an anesthesiologist in New York, New York. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gem Marian Manalo practice?
Dr. Manalo practices at 121 W 27th St, New York, NY 10001. Dr. Manalo's primary practice is Manhattan Gastroenterology in New York, New York. Dmand AI also links Dr. Manalo to 1 group practice or clinic and 1 medical group.
What is Dr. Gem Marian Manalo's office phone number?
The practice phone on file for Dr. Manalo is (212) 427-8761.
What is Dr. Gem Marian Manalo's medical license number?
Dr. Manalo holds Massachusetts license 291692.
Which hospitals is Dr. Gem Marian Manalo affiliated with?
Dr. Manalo is affiliated with Auburn Community Hospital.
What medical group is Dr. Gem Marian Manalo part of?
Dr. Manalo is linked to Mount Sinai Nuclear Medicine Associates. Dmand AI links Dr. Manalo to 1 more medical group.
Does Dr. Gem Marian Manalo accept Medicare?
Yes. CMS data shows Dr. Manalo billed Medicare for 22 services in 2024.
How many Medicare patients does Dr. Gem Marian Manalo see?
CMS counts 35 Medicare patients who saw Dr. Manalo in 2024, with an average age of 77.
What services does Dr. Gem Marian Manalo bill to Medicare?
In 2024, Dr. Manalo's most billed Medicare services were anesthesia (00537) and surgery: heart and blood vessels (36620).
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Where did Dr. Gem Marian Manalo go to medical school?
Dr. Manalo graduated from Wayne State University School of Medicine in 2018.
Has Dr. Gem Marian Manalo received payments from drug or device companies?
CMS Open Payments shows $58 in general payments to Dr. Manalo from 2 companies from 2024 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Gem Marian Manalo been practicing?
Dr. Manalo graduated from medical school in 2018, 8 years ago.
Does Dr. Gem Marian Manalo do research?
Dmand AI links 2 publications to Dr. Manalo.
Who does Dr. Gem Marian Manalo publish with?
Dr. Manalo's most frequent co-authors are Jeffrey Paul Fleming, MD (1 shared paper), Michael Timothy Hresko, MD (1 shared paper) and Jason Zhensheng Qu, MD (1 shared paper).
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